Page 1
Motor Protection Circuit Breaker
J7MN
MPCB system
• Rotary and switch types
• Rated operational current 32 A, 63 A and 100 A
• Switching capacity up to 100 kA/400 V
• Fixed short-circuit release = 13 x I
• Overload release adjustable 0.65 - 1 x I
• Motor protection CLASS 10
• Fulfill all needed standards
Options
• ON/OFF indication
• Trip alarm/indication
• Undervoltage release
• Shunt release
• Three phase busbar system
• Moulded plastic enclosures
• Door coupling rotary mechanisms
• Insulated Link modules
Ordering Information
u
u
)
■ Model Number Legend
1. Motor Protection Circuit Breaker
J7MN-##-###
123
2. Options for MPCB
J77MN-##-###
123
3. Busbars, line side terminals and shrouds
J75-###-###
12 3
1) Motor Protection Circuit Breaker
2) Type/range
3) Setting range
1) Options MPCB
2) Auxiliary contacts
T: Trip indicator
U: Undervoltage release
S: Shuntrelease
DC: Door-coupling
HU: DIN-rail adaptors
V: Link modules
PF: Enclosure
3) Other specifications
1) Options MPCB
2) CPM: Busbars
BTC: Line side
TA: Shrouds
3) Other specifications
switch gear
Low voltage
Motor Protection Circuit Breaker J7MN I-1
Page 2
■ System overview
Motor Protection Circuit Breaker
J7MN-3P
J7MN-3R
J7MN-6R
Rated Current In Suitable for
motors 3~400 V
AkWA AkA (Icu)
0.16 - 0.10 - 0.16 2.1 100 J7MN-3P-E16
0.25 0.06 0.16 - 0.25 3.3 100 J7MN-3P-E25
0.4 0.09 0.25 - 0.4 5.2 100 J7MN-3P-E4
0.63 0.18 0.4 - 0.63 8.2 100 J7MN-3P-E63
1 0.25 0.63 - 1 13 100 J7MN-3P-1
1.6 0.55 1 - 1.6 20.8 100 J7MN-3P-1E6
2.5 0.75 1.6 - 2.5 32.5 100 J7MN-3P-2E5
4 1.5 2.5 - 4 52 100 J7MN-3P-4
6 2.2 4 - 6 78 100 J7MN-3P-6
8 3 5 - 8 104 100 J7MN-3P-8
10 4 6 - 10 130 50 J7MN-3P-10
13 5.5 9 - 13 169 50 J7MN-3P-13
17 7.5 11 - 17 221 20 J7MN-3P-17
22 7.5 14 - 22 286 15 J7MN-3P-22
26 11 18 - 26 338 15 J7MN-3P-26
32 15 22 - 32 416 15 J7MN-3P-32
0.16 - 0.10 - 0.16 2.1 100 J7MN-3R-E16
0.25 0.06 0.16 - 0.25 3.3 100 J7MN-3R-E25
0.4 0.09 0.25 - 0.4 5.2 100 J7MN-3R-E4
0.63 0.18 0.4 - 0.63 8.2 100 J7MN-3R-E63
1 0.25 0.63 - 1 13 100 J7MN-3R-1
1.6 0.55 1 - 1.6 20.8 100 J7MN-3R-1E6
2.5 0.75 1.6 - 2.5 32.5 100 J7MN-3R-2E5
4 1.5 2.5 - 4 52 100 J7MN-3R-4
6 2.2 4 - 6 78 100 J7MN-3R-6
8 3 5 - 8 104 100 J7MN-3R-8
10 4 6 - 10 130 100 J7MN-3R-10
13 5.5 9 - 13 169 100 J7MN-3R-13
17 7.5 11 - 17 221 50 J7MN-3R-17
22 7.5 14 - 22 286 50 J7MN-3R-22
26 11 18 - 26 338 50 J7MN-3R-26
32 15 22 - 32 416 50 J7MN-3R-32
26 12.5 18 - 26 338 50 J7MN-6R-26
Setting range
Thermal
Overload
Release
Instantaneous
Short Circuit
Release
Short Circuit
Breaking
Capacity at
3~400 V
Typ e
32 15 22 - 32 416 50 J7MN-6R-32
40 18.5 28 - 40 520 50 J7MN-6R-40
50 22 34 - 50 650 50 J7MN-6R-50
63 30 45 - 63 819 50 J7MN-6R-63
J7MN-9R
63 30 45 - 63 819 50 J7MN-9R-63
75 37 55 - 75 975 50 J7MN-9R-75
90 45 70 - 90 1170 50 J7MN-9R-90
100 - 80 - 100 1300 50 J7MN-9R-100
I-2 Motor Protection Circuit Breaker J7MN
Page 3
Accessories
Description Mounting
place
Transverse Auxiliary Contact block Front 1 1 1 3 2 5 J77MN-11F
Side Auxiliary Contact block Left hand
side
Any Trip Alarm Signalling switch Left hand
side
Short circuit Trip Alarm Signalling switch Left hand
side
Max. per
MPCB
1 116410J77MN-11S
1 116410J77MN-TA-11S
1 116410J77MN-T-11S
Contacts Rated Operating
Current
AC15 AC1
24 V 240 V 240 V
NO NC A A A
2- 325J77MN-20F
- 2325J77MN-02F
2- 6410J77MN-20S
- 26410J77MN-02S
Typ e
Description Mounting
Undervoltage Release Trips the circuit-breaker when
the voltage is interrupted. Prevents the motor from being restarted accidentally when the
voltage is restored, suitable for
EMERGENCY STOP acc. to
VDE 0113
Shunt Release Trips the circuit-breaker when
the release coil energized.
Description Typ e
Enclosure Plastic enclose with rotary operating mechanism, lockable space for aux. contact + release J77MN-PF-3R
Enclose with rotary operating mechanism yellow - red, lock space for aux. contact + release J77MN-PFC-3R
Door-coupling rotary The door-coupling rotary operating mechanisms consist of
a knob, a coupling driver and an extension shaft (5 mm x
5 mm, lenght 330 mm). The door-coupling rotary operating
mechanisms are designed for degree of protection IP 65.
The door locking device prevents accidental opening of the
cubicle door in the ON position of the circuit-breaker. The
OFF position can be locked with up to 3 padlocks.
Link modules Mechanical and electrical connection between Motor Pro-
tection Circuit Breaker and Contactor. Up-to max. 32 A.
Electrical connection between Motor Protection Circuit
Breaker and Contactor.
place
Right hand
side
Right hand
side
Max. per
MPCB
1 24 V 50 Hz, 28 V 60 Hz J77MN-U-24
1 24 V 50 Hz, 28 V 60 Hz J77MN-S-24
Rated voltages Type
110 - 127 V 50 Hz, 120 V 60 Hz J77MN-U-110
220 - 230 V 50 Hz, 240 - 260 V 60 Hz J77MN-U-230
240 V 50 Hz, 277 V 60 Hz J77MN-U-240
380 - 400 V 50 Hz, 440 - 460 V 60 Hz J77MN-U-400
415 - 440 V 50 Hz, 460 - 480 V 60 Hz J77MN-U-415
110 - 127 V 50 Hz, 120 V 60 Hz J77MN-S-110
220 - 230 V 50 Hz, 240 - 260 V 60 Hz J77MN-S-230
240 V 50 Hz, 277 V 60 Hz J77MN-S-240
380 - 400 V 50 Hz, 440 - 460 V 60 Hz J77MN-S-400
415 - 440 V 50 Hz, 460 - 480 V 60 Hz J77MN-S-415
Mechanism black, with supporting
bracket
Mechanism; red/yellow, with supporting bracket
Mini Motor Contactor J7KNA J77MN-VKA-3
Motor Contactor J7KN J77MN-VKN-3
Motor Contactor J7KNG J77MN-VKG-3
Up-to 32 A J77MN-VD-3
Up-to 63 A J77MN-VD-6
Up-to 100 A J77MN-VD-9
J77MN-DC-B
J77MN-DC-RY
J77MN-VDG-6
switch gear
Low voltage
Motor Protection Circuit Breaker J7MN I-3
Page 4
Description Typ e
DIN-rail adaptors For mechanical fixing of circuit-breaker and contactor. With
two moveable DIN-rail clips for easy mounting & replacing.
For J7MN-3 and J7KN(G)-10 up-to
J7KN(G)-40
J77MN-HU-3
Can be connected to one 35W x 15H mm DIN-rail or two
35W x 7.5H mm DIN-rails.
For mechanical fixing of circuit-breaker and contactor. Can
be connected to one 35W x 15H mm DIN-rail or two 35W x
7.5H mm DIN-rails.
For J7MN-6 and J7KN(G)-24 up-to
J7KNG-40 and/or J7KN-62
For J7MN-9 and J7KN-50 up-to
J77MN-HU-6
J77MN-HU-9
J7KN-74
Scale cover sealable for covering the current setting scale (1 bag with 10 units) J77MN-K
Push-in lugs for screwing the circuit-breaker onto mounting plates. 2 units required (1 bag with 20 units) J77MN-L
Insulation barriers Up to 600 V acc.UL 489 for increased distances and clearances acc. to UL Type "E“ 4 pcs per
device (2 pcs on each side) (pack 2 units)
Insulated 3-Phase Busbar System
Description Version For Units
(MPCB)
3-phase busbars
modular spacing = 45 mm
In = 64 A
*1
3-phase busbars
modular spacing = 54 mm
In = 64 A
*1
3-phase busbars
modular spacing = 54 mm
In = 120 A
*1
3-phase busbars
modular spacing = 63 mm
In = 120 A
*1
Shrouds for
unused terminals on the busbar system
Line side terminals
to be used with busbar systems J75-CPM-...6
In = 64 A
*1
Line side terminals
for 2 units J7MN-3P
for 3 units 1 J75-CPM-3-45-6
J7MN-3R
for 4 units 1 J75-CPM-4-45-6
for 5 units
*2
for 2 units J7MN-3P
for 3 units 1 J75-CPM-3-54-6
J7MN-3R
for 4 units 1 J75-CPM-4-54-6
for 5 units
*2
for 2 units J7MN-6R 1 J75-CPM-2-54-12
for 3 units 1 J75-CPM-3-54-12
for 4 units
*2
for 2 units J7MN-9R 1 J75-CPM-2-63-12
for 3 units 1 J75-CPM-3-63-12
for 4 units
*2
for 64 A version 10 J75-TA-63
for 120 A version J75-TA-120
IEC 60947 EN 60947
according to UL 508
IEC 60947 EN 60947
according to UL 508E
to be used with busbar systems J75-CPM-...12
In = 120 A
*1
The sum of all added currents per module must not exeed the above mentioned nominal currents!
*2
For more than 5 units (64 A) and 4 units (120 A) the system can be extended accordingly by installing an additional busbar
*1
Pack
pcs
1 J75-CPM-2-45-6
1 J75-CPM-5-45-6
1 J75-CPM-2-54-6
1 J75-CPM-5-54-6
1 J75-CPM-4-54-12
1 J75-CPM-4-63-12
1 J75-BTC-25-IC
1 J75-BTC-25-EC
1 J75-BTC-50-E
J77MN-TB32
J77MN-TB100
Typ e
I-4 Motor Protection Circuit Breaker J7MN
Page 5
■ Components for Fuseless Load Feeders, DIN-rail Mounting
Type of coordination „1“ 3 x 415 V 10 kA (other conditions on request)
Motor Contactor Link-module DIN-rail adaptor Circuit-breaker
3~400 V up to …KW Range Model Model Range
4 J7KNA-09 J77MN-VKA Not needed J7MN-3P / J7MN-3R
J7KN-10 J77MN-VKN-3
J7KN-10-xx VKN3 Included
J7KNG-10-xx D J77MN-VKG-3
5.5 J7KNA-12 J77MN-VKA Not needed J7MN-3P / J7MN-3R
J7KN-14 J77MN-VKN-3
J7KN-14-xx VKN3 Included
J7KNG-14-xx D J77MN-VKG-3
7.5 J7KN-18 J77MN-VKN-3 Not Needed J7MN-3P / J7MN-3R
J7KN-18-xx VKN3 Included
J7KNG-18-xx D J77MN-VKG-3
11 J7KN-22 J77MN-VKN-3 Not Needed J7MN-3P / J7MN-3R
J7KN-22-xx VKN3 Included
J7KNG-22-xx D J77MN-VKG-3
J7KN(G)-24 J77MN-VD-3 J77MN-HU-3
J7KN-24 J77MN-VD-6 J77MN-HU-6 J7MN-6R
J7KNG-24 J77MN-VDG-6
15 J7KN(G)-32 J77MN-VD-3 J77MN-HU-3 J7MN-3P / J7MN-3R
J7KN-32 J77MN-VD-6 J77MN-HU-6 J7MN-6R
J7KNG-32 J77MN-VDG-6
18.5 J7KN-40 J77MN-VD-6 J77MN-HU-6 J7MN-6R
J7KNG-40 J77MN-VDG-6
22 J7KN-50 J77MN-VD-6 J77MN-HU-6 J7MN-6R
30 J7KN-62 J77MN-VD-6 J77MN-HU-6 J7MN-6R
J7KN-62 J77MN-VD-9 J77MN-HU-9 J7MN-9R
37 J7KN-74 J77MN-VD-9 J77MN-HU-9 J7MN-9R
45 J7KN-85 Not available Not available J7MN-9R
55 J7KN-110 Not available Not available J7MN-9R
switch gear
Low voltage
Motor Protection Circuit Breaker J7MN I-5
Page 6
Specifications
■ Engineering data and Characteristics
Technical Data according to IEC/EN 60947-1, 60947-2, 60947-4-1 and VDE 0660
This table shows the rated ultimate short-circuit breaking capacity Icu
and the rated service short-circuit breaking capacity Ics of the J7MN
circuit-breakers with different operational voltages as a function of
the rated current In of the circuit-breakers. The circuit-breakers can
be fed at the top or bottom supply terminals without any reduction of
the rated data.
If the short-circuit current exceeds the rated short-circuit breaking
capacity of the circuit-breaker specified in the tables at the installation point, a back-up fuse is to be used. The maximum rated current
for the back-up fuse is specified in the tables. These fuses are only
suitable for the short-circuit-currents as indicated on the fuses.
Circuitbreaker
Rated
current In
up to AC 240V
*1
Icu Ics max.
fuse
(gL/gG)
up to AC 400V
up to AC 415V*2
Icu Ics max.
*3
*1
*3
fuse
(gL/gG)
up to AC 440V
up to AC 460V
*1
*2
Icu Ics max.
fuse
(gL/gG)
up to AC 500V
up to AC 525V
Icu Ics max.
*3
*1
*2
*3
fuse
(gL/gG)
up to AC 690V
*1
Icu Ics max.
fuse
(gL/gG)
*3
Typ e A kA kA A kA kA A kA kA A kA kA A kA kA A
J7MN-3P 0.16 to 0.63 100 100 -- 100 100 -- 100 100 -- 100 100 -- 100 100 --
1 100 100 -- 100 100 -- 100 100 -- 100 100 -- 100 100 --
1.6 100 100 -- 100 100 -- 100 100 -- 100 100 -- 3 3 20
2.5 100 100 -- 100 100 -- 100 100 -- 50 100 -- 3 3 35
4 100 100 -- 100 100 -- 100 38 50 15 38 50 3 3 40
6 100 100 -- 100 100 -- 50 11 50 10 11 40 3 3 50
8 100 100 -- 100 100 -- 15 11 63 10 8 40 3 3 63
10 100 100 -- 50 38 80 15 11 63 6 8 63 3 3 63
13 100 100 -- 50 38 80 10 8 80 6 5 63 3 3 63
17 50 38 -- 20 15 100 10 8 80 6 5 80 3 3 63
22 40 30 125 15 11 100 8 6 100 6 5 80 3 3 63
26 40 30 125 15 11 100 8 6 100 6 5 80 3 3 63
32 30 22 125 15 11 100 6 4 100 5 4 80 3 3 63
J7MN-3R 0.16 to 1.0 100 100 -- 100 100 -- 100 100 -- 100 100 -- 100 100 --
1.6 100 100 -- 100 100 -- 100 100 -- 100 100 -- 100 100 --
2.5 100 100 -- 100 100 -- 100 100 -- 100 100 -- 8 8 35
4 100 100 -- 100 100 -- 100 100 -- 100 100 -- 8 8 40
6 100 100 -- 100 100 -- 100 100 -- 100 100 -- 6 6 50
8 100 100 -- 100 100 -- 50 38 80 50 38 63 6 6 63
10 100 100 -- 100 100 -- 50 38 80 50 38 80 6 6 63
13 100 100 -- 100 100 -- 50 38 80 42 32 80 6 6 63
17 100 100 -- 50 38 100 20 15 80 10 8 80 4 4 63
22 100 100 -- 50 38 125 20 15 100 10 8 80 4 4 63
26 100 100 -- 50 38 125 20 15 100 10 8 80 4 4 63
32 100 100 -- 50 38 125 20 15 100 10 8 80 4 4 63
J7MN-6R 26 100 100 -- 50 50 125 35 27 125 12 9 100 5 5 80
32 100 100 -- 50 50 125 35 27 125 10 8 100 5 5 80
40 100 100 -- 50 50 160 35 27 125 10 8 100 5 5 80
50 100 100 -- 50 50 160 35 27 125 10 8 100 5 5 80
63 100 100 -- 50 50 160 35 27 160 10 8 100 5 5 80
J7MN-9R 63 100 100 -- 50 38 160 40 30 160 12 9 100 6 5 80
75 100 100 -- 50 38 160 40 30 160 8 6 125 5 4 100
90 100 100 -- 50 38 160 40 30 160 8 6 125 5 4 125
100 100 100 -- 50 38 160 40 30 160 8 6 125 5 4 125
-- No back-up fuse required
*1
10% overvoltage
*2
5% overvoltage
*3
Back up fuse required if short-circuit current at installation point > Icu
I-6 Motor Protection Circuit Breaker J7MN
Page 7
Technical Data according to IEC/EN 60947-1, 60947-2, 60947-4-1 and VDE 0660
Main Circuit
Typ e J7MN-3P J7MN-3R J7MN-6R J7MN-9R
Number of poles 3
Max. rated current Inmax (=max. rated operational current Ie) 32 A 32 A 63 A 100 A
Permissible ambient temperature Storage/transport -50 to +80°C
Operation -20 to +60°C
Storage/transport -58 to +176°F
Operation -4 to +140°F
Rated insulation voltage Ui 690 V
Rated impulse withstand voltage Uimp 6 kV 8 kV
Rated operational voltage Ue 690 V
Rated frequency 50/60 Hz
Utilization category IEC 60 947-2 (circuit-breaker) A
IEC 60 947-4-1 (motor starter) AC3
Class acc. to IEC 60 947-4-1 10
Power loss Pv per circuit-breaker In -> up to 4 A 9.8 W -
dependent on rated current In In -> 6 up to 26 A 8 W -
(upper setting range) In -> 32 A 3.9 W -
R per conducting path = P/I² × 3 In -> 26 up to 63 A - - 12.6 W -
In -> up to 63 A W - - - 11.9 W
In -> 75 up to 100 A - - - 15 W
Shock resistance acc. to IEC 68 Part 2-27 25 g
Degree of protection acc. to IEC 60 529 IP 20
Shock hazard protection acc. to DIN VDE 0106 Part 100 safe against finger touch
Weight 0.32 kg 0.36 kg 1 kg 2.2 kg
Temperature compensation acc. to IEC 60 947-4-1 -20 to +60°C
Mechanical endurance operating cycles 100,000 50,000
Electrical endurance operating cycles 100,000 25,000
Max. operating frequency per hour (motor starts) 1/h 25
*1
Suitable at 690 V for: earthed-neutral systems, overvoltage category I to IV, pollution degree 3 (standard-industry): U
*2
Suitable at 1000 V for: earthed-neutral systems, overvoltage category I to IV, pollution degree 3 (standard-industry): U
Data for other conditions on request.
*1
imp
imp
1000 V
= 6 kV.
= 8 kV.
*2
Conductor cross-sections for main circuit
Typ e
Screw type, terminal type Pz2 Pz2 4 mm hexagon socket
Tightening torque 0.8 to 2.5 Nm 3 to 4.5 Nm 4 to 6 Nm
7 to 22 lb-in 26 to 39 lb-in 35 to 53 lb-in
Conductor cross-sections solid 1 x (1 to 10) mm² 1 x (0.75 to 35) mm² 1 x (2.5 to 70) mm²
2 x (1 to 6) mm² 2 x (0.75 to 25) mm² 2 x (2.5 to 50) mm²
1 x (18 to 8) AWG 1 x (18 to 2) AWG 1 x (12 to 2/0) AWG
2 x (18 to 10) AWG 2 x (18 to 4) AWG 2 x (12 to 1/0) AWG
stranded 1 x (1 to 6) mm² 1 x (0.75 to 35) mm² 1 x (2.5 to 70) mm²
2 x (1 to 6) mm² 2 x (0.75 to 25) mm² 2 x (2.5 to 50) mm²
1 x (18 to 10) AWG 1 x (18 to 2) AWG 1 x (12 to 2/0) AWG
2 x (18 to 10) AWG 2 x (18 to 4) AWG 2 x (12 to 1/0) AWG
flexible 1 x (1 to 6) mm² 1 x (0.75 to 25) mm² 1 x (2.5 to 50) mm²
2 x (0.75 to 4) mm² 2 x (0.75 to 16) mm² 2 x (2.5 to 35) mm²
1 x (18 to 10) AWG 1 x (18 to 4) AWG 1 x (12 to 1/0) AWG
2 x (18 to 10) AWG 2 x (18 to 6) AWG 2 x (10 to 2) AWG
J7MN-3 J7MN-6 J7MN-9
screw
switch gear
Low voltage
Motor Protection Circuit Breaker J7MN I-7
Page 8
Auxiliary switches
A
Aux. Type Switching capacity Control voltage
J77MN-11F / 20F / 02F & J7MN-T(A)
Front transverse auxiliary switch with 1
NO + 1 NC, 2 NO, 2 NC
J77MN-11S / 20S / 02S
Lateral auxiliary switch with 1 NO + 1
NC, 2 NO, 2 NC & two signalling
switches with 1 NO + 1 NC
J77MN-U
Undervoltage release
J77MN-S
Shunt release
Short-circuit protection for auxiliary and control circuits Fuse gL/gG 10 A
Conductor cross-sections for auxiliary and control circuits Screw-type Pz2
Rated operational voltage Ue 24 VAC 240 VAC
Rated operational current Ie/AC-15 3 A 2 A
Ie/AC-12 Ith 5 A 5 A
Rated operational voltage Ue L/R 200 ms 24 VDC 220 VDC
Rated operational current Ie/DC-13 1 A 0.1 A
Rated operational voltage Ue 24 VAC 240 VAC
Rated operational current Ie/AC-15 6 A 4 A
Ie/AC-12 Ith 10 A
Rated operational voltage Ue L/R 200 ms 24 VDC 220 VDC
Rated operational current Ie/DC-13 2 A 0.25 A
Power consumption during pick-up 8.5 VA / 6 W
uninterrupted duty 3 VA / 1.2 W
Response voltage trip 0.7 to 0.35 × Us (V)
pick-up 0.85 to 1.1 × Us (V)
Power consumption during pick-up 8.5 VA / 6 W
uninterrupted duty 3 VA / 1.2 W
Response voltage trip 0.7 to 1.1 × Us (V)
Miniature circuit breaker C-characteristic 6 A
solid 1 x (0.5 to 2.5) / 2x (0.5 to 2.5) mm²
flexible 1 x (0.5 to 4) / 2 x (0.75 to 2.5) mm²
solid AWG 1 x (20 to 14) / 2 x (20 to 14) AWG
flexible AWG 1 x (20 to 10) / 2 x (18 to 14) AWG
Time/Current characteristic
J7MN-3P & J7MN-3R J7MN-6R & J7MN-9R
HourMinuteSecond
Operation time
Time
Ir=10.4, ..., 15.6 X In
Reflex tripping:
t≤5 ms
HourMinuteSecond
Operation time
Time
Ir=10.4, ..., 15.6 X In
Reflex tripping:
t≤5 ms
Multiple of set current × Ie Multiple of set current × Ie
I The curve shows the mean operating current at an ambient temperature of 20°C starting from cold.
II The tripping characteristic of electromagnetic overcurrent releases (short-circuit releases)
The tripping characteristic of the inverse-time delayed overload releases apply for DC and AC with a frequency of 0 to 400 Hz.
t operating temperature, the tripping times of the thermal releases are reduced to approximately 25 %.
The characteristic shown here is a schematic representation of circuit-breakers for all ranges.
Current limiting characteristics and I²t characteristics are available on request.
I-8 Motor Protection Circuit Breaker J7MN
Page 9
Permissible ratings of devices approved for North America
Circuit breakers J7MN as „Manual Motor Starter“
If used as „Manual Motor Starter“ the circuit breaker is always operated in combination with a short circuit device. For use with approbated fuses or circuit breakers according to UL489 or CSA22.2 No. 5
J7MN-3
Rated operational current Ie 0.16 0.25 0.4 0.63 1 1.6 2.5 4 6 8 10 13 17 22 26 32 A
Max. short-circuit current
J7MN-3P 240 V 100 100 100 100 100 100 100 100 100 100 50 50 40 30 30 20 kA
480 V50505050505050502525101010107.57.5kA
600 V10101010101010555555555kA
J7MN-3R 240 V 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 kA
480 V50505050505050505050505030303030kA
600 V10101010101010101010101010101010kA
Motor load
1-phase
Motor load
3-phase
115 V -------
230 V -----
200 V ------
230 V -----
1
460V ----
600V ----
/
2
1
/
2
Max. rated fuse 1 1 1 1 3 6 10 15 20 30 40 50 60 80 100 125 A
Max. breaker size 15 15 15 15 15 15 15 15 20 30 40 50 60 80 100 125 A
J7MN-6R J7MN-9R
Rated operational current Ie 26 32 40 50 63 63 75 90 100 A
Max. short-circuit current 240 V 100 100 100 100 100 100 100 100 100 kA
480 V505050505025252525kA
600 V101010101010101010kA
Motor load
1-phase
Motor load
3-phase
115 V2335557
1
230 V 5 5 7
/210 15 15 15 20 20 HP
230 V101015152025253040HP
1
460V 20 25 30 40
/250 50 60 75 75 HP
600V 25 30 40 50 60 60 75 100 100 HP
Max. rated fuse 100 125 150 200 250 250 300 350 400 A
Max. breaker size 100 125 150 200 250 250 300 350 400 A
only. The sizes are selected according to National Electrical Code
(UL), or Canadian Electrical Code (CSA)
1
1
1
1
/
/
1
/
10
1
/
3
3
/
4
111/
8
1
1
/
/3 1/
6
3
1
/
/
2
4
1
/
111/
2
1235571/210 15 15 20 HP
3 5 5 10 10 15 20 20 30 HP
2
1
/210 10 HP
/
4
3
111/
2
12233 5 71/271/2HP
2335 71/2 71/210 HP
2
1
/
/
2
2
111/
2
2
23355HP
22HP
Circuit breakers J7MN as "Combination Motor Controller Type E" and " Suitable for Group Installation"
Acc to UL508 demands a line-side 1 inch air and 2 inch creepage
distance for „Combination Motor Controller Type E“ is necessary.
Therefor circuitbreaker J7MN-3R is approved to UL 508 in combination with the Terminal block J7MN-TB32. Circuit-breakers J7MN-9R
J7MN-3R + J77MN-TB32
Rated operational current Ie 0.16 0.25 0.4 0.63 1 1.6 2.5 4 6 8 10 13 17 22 26 32 A
Max. short-circuit current 240 V 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 kA
480 V50505050505050505050505030303030kA
600 V10101010101010101010101010101010kA
Motor load
1-phase
Motor load
3-phase
115 V -------
230 V -----
200 V ------
230 V -----
1
460V ----
600V ----
/
2
1
/
2
Max. rated fuse or breaker 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 A
are approved to UL 508 in combination with the insulation barriers
J7MN-TB100. According to CSA these terminal blocks can be omitted when the device is used as "Combination Motor Controller
Type E“.
1
1
1
1
/
/
1
/
10
1
/
3
3
/
4
111/
8
1
1
/
/3 1/
6
1
3
/
/
2
4
1
/
111/
2
1235571/210 15 15 20 HP
3 5 5 10 10 15 20 20 30 HP
2
/
4
3
111/
2
12233 5 71/271/2HP
2335 71/2 71/210 HP
2
1
/
/
2
2
111/
2
23355HP
22HP
2
switch gear
Low voltage
Motor Protection Circuit Breaker J7MN I-9
Page 10
J7MN-6R J7MN-9R + J77MN-TB100
Rated operational current Ie 26 32 40 50 63 63 75 90 100 A
Max. short-circuit current 240 V 100 100 100 100 100 100 100 100 100 kA
480 V 50 50 50 50 50 40 40 40 40 kA
600 V 10 10 10 10 10 10 10 10 10 kA
Motor load
1-phase
Motor load
3-phase
Max. rated fuse or breaker 600 600 600 600 600 1,000 1,000 1,000 1,000 A
Ratings of auxiliary switches and
alarm switches
Breaking capacity A600 A300 AC
115 V 23355 57
230 V 5 5 7
230 V 10 10 15 15 20 25 25 30 40 HP
460V 20 25 30 40 50 50 60 75 75 HP
600V 25 30 40 50 60 60 75 100 100 HP
Combination Motor Controller Type E
Lateral auxiliary switch with
J77MN-xxS and signalling
switch J77MN-T
Q300 R300 DC
1
/210 15 15 15 20 20 HP
Transversal auxiliary switch
with J77MN-xxF
1
/210 10 HP
Descriptions
Releases
Circuit-breakers J7MN are equipped with bimetallic-based, inversetime delayed overload releases and with instantaneous overcurrent
releases (electromagnetic short-circuit releases). The overload
releases can be set in accordance with the load current. The overcurrent releases are permanently set to a value 13 times the rated
current and thus enable trouble-free start-up of motors. The scale
cover can be sealed to prevent unauthorized adjustments to the set
current.
Operating mechanisms
Circuit-breakers J7MN-3P are actuated via a rocker operating mechanism and circuit-breakers J7MN-3R, J7MN-6R and J7MN-9R via a
rotary operating mechanism. An electrical signal can be output, at all
Circuit-breakers, via a signalling switch to indicate that the Circuitbreaker has tripped. All operating mechanisms can be locked in the
0 position with a padlock (shackle diameter 3.5 to 4.5 mm). The
J7MN Circuit-breakers fulfil the isolation characteristics specified in
IEC 60947-2.
Operating conditions
Circuit-breakers J7MN are suitable for use in any climate. They are
designed for operation in enclosed rooms under normal conditions
(e. g. no dust, corrosive vapours or harmful gases). Suitable enclosures must be provided for installation in dusty or damp rooms. Circuit-breakers J7MN can also be fed from below. In order to prevent
premature tripping due to phase failure sensitivity, the three conducting paths must always be uniformly loaded. The conducting paths
must be connected in series in the case of single-phase loads.
Short-circuit protection
The short-circuit releases of J7MN circuit-breakers disconnect the
faulty load feeder from the system in the event of a short circuit and
thus prevent any further damage from being caused. Circuit-breakers with a short-circuit breaking capacity of 50 kA or 100 kA at a voltage of 400 V AC are practically short-circuit-proof at this voltage, as
higher short-circuit currents are not usually encountered at the installation point. Back-up fuses are only necessary if the short-circuit current at the installation point exceeds the rated ultimate short-circuit
breaking capacity of the circuit-breakers.
Motor protection
The tripping characteristics of J7MN circuit-breakers are designed
mainly to protect three-phase induction motors. The circuit-breakers
are therefore also referred to as Manual Motor Starters. The current
of the motor to be protected is set with the aid of the scale.
Line protection
J7MN Circuit-breakers for motor protection are also suitable for line
protection. The J7MN Circuit-breakers fulfil the isolation conditions of
IEC 60 947-3 as well as the additional test conditions for circuitbreakers with isolation characteristics specified in IEC 60947-2. Taking IEC 60 204-1 into consideration, they can thus be implemented
as main and EMERGENCY STOP switches. Door-coupling rotary
operating mechanism do not fulfil the isolation characteristics.
Wiring diagrams
Circuit breakers Traverse Aux. Contact blocks Aux. Contact Block (side mounted)
J7MN J77MN-11F J77MN-20F J77MN-02F J77MN-11S J77MN-20S J77MN-02S
Alarm Switch Undervoltage Release Shunt Release
J77MN-T-11S J77MN-TA-11S J77MN-U-... J77MN-S-...
I-10 Motor Protection Circuit Breaker J7MN
Page 11
Dimensions
All 1) Sid
3P/3R 6) Push-in L
Circuit-breaker J7MN-3P
Circuit-breaker J7MN-3R
Height of arcing spaces
(clearance from earthed parts )
at Ue (V) 240 415 460 525 690
mm 20 20 20 20 20
inch 0.8 0.8 0.8 0.8 0.8
Height of arcing spaces
(clearance from earthed parts )
at Ue (V) 240 415 460 525 690
mm 30 30 30 30 50
inch 1.18 1.2 1.18 1.18 2
Circuit-breaker J7MN-6R
Circuit-breaker J7MN-9R
Height of arcing spaces
(clearance from earthed parts )
at Ue (V) 240 415 460 525 690
mm 50 50 50 50 50
inch 22222
Height of arcing spaces
(clearance from earthed parts )
at Ue (V) 240 415 460 525 690
mm 50 70 70 110 150
inch 22
¾
2¾4,33 6
switch gear
Low voltage
e aux. contact
2) Magnetic trip alarm
3) Shunt or undervoltage release of arcing
4) Transverse aux. contact
5) 35 mm DIN-rail acc. to EN 50022
3R/6R/9R 7) Handle lock in OFF-position ( 5 mm)
ugs for screw mounting
9R 8) 4 mm hexagon socket screw
9) 70 mm DIN-rail acc. to EN 50023
Motor Protection Circuit Breaker J7MN I-11
Page 12
Enclosure J77MN-PF
Door-coupling rotary operating mechanism J77MN-DC
1) Max. for shackle diameter for padlock 8 mm
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. J08E-EN-02
In the interest of product improvement, specifications are subject to change without notice.
I-12 Motor Protection Circuit Breaker J7MN
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