Relays & Sockets
RH
RH Series Compact Power Relays
Key features
• SPDT through 4PDT, 10A contacts
• Compact power type relays
• Miniature power relays with a large capacity
• 10A contact capacity
• Compact size saves space
Contact Model
Standard
SPDT
DPDT
3PDT
4PDT
PCB terminal relays are designed to mount directly to a circuit board without any socket.
With Indicator
With Check Button
With Indicator and Check Button
Top Bracket Mounting
With Diode (DC coil only)
With Indicator and Diode (DC coil only)
Standard
With Indicator
With Check Button
With Indicator and Check Button
Top Bracket Mounting
With Diode (DC coil only)
With Indicator and Diode (DC coil only)
Standard
With Indicator
With Check Button
With Indicator and Check Button
Top Bracket Mounting
With Diode (DC coil only)
With Indicator and Diode (DC coil only)
Standard
With Indicator
With Check Button
With Indicator and Check Button
Top Bracket Mounting
With Diode (DC coil only)
With Indicator and Diode (DC coil only)
Part Number Selection
Part Number
Blade
Terminal
RH1B-U
RH1B-UL
RH1B-UC
RH1B-ULC
RH1B-UT
RH1B-UD
RH1B-ULD
RH2B-U
RH2B-UL
RH2B-UC
RH2B-ULC
RH2B-UT
RH2B-UD
RH2B-ULD
RH3B-U
RH3B-UL
RH3B-UC
RH3B-ULC
RH3B-UT
RH3B-UD
RH3B-ULD
RH4B-U
RH4B-UL
RH4B-UC
RH4B-ULC
RH4B-UT
RH4B-UD
RH4B-ULD
PCB Termi-
0 RH1V2-U 0
—
0
—
0
—
0
—
0
0 RH1V2-UD 0
— DC12V, DC24V, DC48V, DC110V
0
0 RH2V2-U 0
0 RH2V2-UL 0
—
0
—
0
—
0
0 RH2V2-UD 0
0 RH2V2-ULD 0
0 RH3V2-U 0
0 RH3V2-UL 0
—
0
—
0
—
0
—
0
—
0
0 RH4V2-U 0
0 RH4V2-UL 0
—
0
—
0
—
0
0 RH4V2-UD 0
—
0
nal
AC6V, AC12V, AC24V, AC110V, AC120V,
AC220V, AC240V DC6V, DC12V, DC24V,
DC48V, DC110V
DC6V, DC12V, DC24V, DC48V, DC110V
AC6V, AC12V, AC24V, AC110-120V,
AC220-240V
DC6V, DC12V, DC24V, DC48V, DC100-110V
DC6V, DC12V, DC24V, DC48V, DC100-110V
AC6V, AC12V, AC24V, AC110V, AC120V,
AC220V, AC240V DC6V, DC12V, DC24V,
DC48V, DC110V
DC6V, DC12V, DC24V, DC48V, DC110V
AC6V, AC12V, AC24V, AC110V, AC120V,
AC220V, AC240V DC6V, DC12V, DC24V, DC48V,
DC110V
DC6V, DC12V, DC24V, DC48V, DC110V
Coil Voltage Code
(Standard Stock in bold)
Ordering Information
When ordering, specify the Part No. and coil voltage code:
(example) RH3B-U AC120V
Part No. Coil Voltage Code
Switches & Pilot Lights Signaling Lights Relays & Sockets Timers Contactors Terminal Blocks Circuit Breakers
800-262-IDEC (4332) • USA & Canada
773
RH
Relays & Sockets
Sockets (for Blade Terminal Models)
Relays Standard DIN Rail Mount 1 Finger-safe DIN Rail Mount 1Through Panel Mount PCB Mount
RH1B SH1B-05 SH1B-O5C SH1B-51 SH1B-62
RH2B SH2B-05 SH2B-05C SH2B-51 SH2B-62
RH3B SH3B-05 SH3B-05C SH3B-51 SH3B-62
Switches & Pilot LightsSignaling LightsRelays & SocketsTimersContactorsTerminal BlocksCircuit Breakers
RH4B SH4B-05 SH4B-05C SH4B-51 SH4B-62
Hold Down Springs & Clips
Appearance Item Relay
RH1B SY2S-02F1
Pullover Wire Spring
RH2B SY4S-02F1
RH3B SH3B-05F1
RH4B SH4B-02F1
For DIN
Mount Socket
2
2
2
2
For Through Panel &
PCB Mount Socket
SY4S-51F1
1. DIN Rail mount socket
comes with two
horseshoe clips. Do
not use unless you
plan to insert pullover
wire spring. Replacement horseshoe
clip part number is
Y778-011.
2. Must use horseshoe clip when
mounting in DIN mount socket.
Replacement horseshoe clip
part number is Y778-011.
3. Two required per relay.
Leaf Spring (side latch) RH1B, RH2B, RH3B, RH4B SFA-202
Leaf Spring (top latch) RH1B, RH2B, RH3B, RH4B SFA-101
3
3
SFA-302
SFA-301
AC Coil Ratings
Rated Current (mA) ±15% at 20°C
Voltage
AC 50Hz AC 60Hz
(V)
SPDT DPDT 3PDT 4PDT SPDT DPDT 3PDT 4PDT SPDT DPDT 3PDT 4PDT
6 170 240 330 387 150 200 280 330 330 9.4 6.4 5.4
12 86 121 165 196 75 100 140 165 165 39.3 25.3 21.2
24 42 60.5 81 98 37 50 70 83 83 153 103 84.5
110 9.6 — 18.1 21.6 8.4 — 15.5 18.2 18.2 — 2,200 1,800
110-120 —
9.4-
10.8
— — — 8.0-9.2 — — — — — —
120 8.6 — 16.4 19.5 7.5 — 14.2 16.5 16.5 — 10,800 7,360
220 4.7 — 8.8 10.7 4.1 — 7.7 9.1 9.1 — 10,800 7,360
220-240 — 4.7-5.4 — — — 4.0-4.6 — — 18,820 — —
240 4.9 — 8.2 9.8 4.3 — 7.1 8.3 8.3 — 12,100 9,120
Coil Resistance (Ω)
±10% at 20°C
DC Coil Ratings
Coil Resistance (Ω)
±10% at 20°C
Voltage
(V)
Rated Current (mA) ±15% at 20°C
SPDT DPDT 3PDT 4PDT SPDT DPDT 3PDT 4PDT
6 128 150 240 250 47 40 25 24
12 64 75 120 125 188 160 100 96
24 32 36.9 60 62 750 650 400 388
48 18 18.5 30 31 2,660 2,600 1,600 1,550
100-110 — 8.2-9.0 — — — 12,250 — —
110 8 — 12.8 15 13,800 — 8,600 7,340
Max. Continuous
Applied Voltage
Operation Characteristics
(against rated values at 20ºC)
Pickup
Voltage
110%
maximum
3
3
80%
Operation Characteristics
(against rated values at 20ºC)
Max. Continuous
Applied Voltage
110%
Dropout
Voltage
10%
minimum
Pickup
Voltage
80%
maximum
Standard coil volt-
ages are in BOLD.
Dropout
Voltage
30%
minimum
774
www.IDEC.com
Relays & Sockets
RH
Contact Ratings
Maximum Contact Capacity
Continuous
Model
SPDT 10A
DPDT
3PDT
4PDT
Current
10A
Note: Inductive load for the rated load — cos ø = 0.3, L/R = 7 ms
Allowable Contact Power Rated Load
Resistive
Load
1540VA
300W
1650VA
300W
Inductive
Load
990VA
210W
1100VA
225W
Voltage
(V)
110 AC 10A 7A
220 AC 7A 4.5A
30 DC 10A 7A
110 AC 10A 7.5A
220 AC 7.5A 5A
30 DC 10A 7.5A
TÜV Ratings
Voltage RH1 RH2 RH3 RH4
240V AC 10A 10A 7.5A 7.5A
30V DC 10A 10A 10A 10A
AC: cos ø = 1.0, DC: L/R = 0 ms
Socket Specifications
Sockets Terminal Electrical Rating Wire Size Torque
(Coil) M3 screws
(contact) M3.5 screws with captive wire clamp
M3.5 screws with captive wire clamp 300V, 10A Maximum up to 2–#12AWG 9-11.5in•lbs
(coil) M3 screws
(contact) M3.5 screws with captive wire clamp, fingersafe
M3.5 screws with captive wire clamp, fingersafe 300V, 10A Maximum up to 2–#12AWG 9-11.5in•lbs
Solder 300V, 10A — —
PCB mount 300V, 10A — —
DIN Rail
Mount
Sockets
Finger-safe
DIN Rail
Mount
Through
Panel
Mount
Socket
PCB Mount
Socket
SH1B-05
SH2B-05
SH3B-05
SH4B-05
SH1B-05C
SH2B-05C
SH3B-05C
SH4B-05C
SH1B-51
SH2B-51
SH3B-51
SH4B-51
SH1B-62 PCB mount 250V, 10A — —
SH2B-62
SH3B-62
SH4B-62
Res.
Load
Ind.
Load
UL Ratings
Resistive General Use Horsepower Rating
Voltage
240V AC 10A 7.5A 7.5A 7A 6.5A 5A 1/3 HP 1/3 HP —
120V AC — 10A 10A — 7.5A 7.5A 1/6 HP 1/6 HP —
30V DC 10A 10A — 7A — — — — —
28V DC — — 10A — — — — — —
RH1
RH2
RH3 RH4
RH1
RH2
RH3 RH4
RH1
RH2
RH3 RH4
CSA Ratings
Voltage
240V AC 10A 10A — 7.5A 7A 7A 7A 5A 1/3 HP
120V AC 10A 10A 10A 10A 7.5A 7.5A — 7.5A 1/6 HP
30V DC 10A 10A 10A 10A 7A 7.5A — — —
250V, 10A Maximum up to 2–#12AWG
250V, 10A Maximum up to 2–#12AWG
Resistive General Use
RH1 RH2 RH3 RH4 RH1 RH2 RH3 RH4 RH1, 2, 3
5.5-9in•lbs
9-11.5in•lbs
5.5-9in•lbs
9-11.5in•lbs
Horsepower
Rating
Switches & Pilot Lights Signaling Lights Relays & Sockets Timers Contactors Terminal Blocks Circuit Breakers
Accessories
Item Appearance Use with Part No. Remarks
Aluminum
DIN Rail
(1 meter length)
DIN Rail End
Stop
Replacement
Hold-Down
Spring Anchor
All DIN rail sockets BNDN1000
DIN rail BNL5 9.1 mm wide.
DIN mount sockets and hold
down springs.
Y778-011
The BNDN1000 is designed to accommodate DIN mount sockets.
Made of durable extruded aluminum, the BNDN1000 measures 0.413
(10.5mm) in height and 1.37 (35mm) in width (DIN standard). Standard
length is 39” (1,000mm).
For use on DIN rail mount socket when using pullover wire hold down
spring. 2 pieces included with each socket.
800-262-IDEC (4332) • USA & Canada
775
RH
Specifications
Contact Material Silver cadmium oxide
Contact Resistance
Minimum Applicable Load 24V DC, 30 mA; 5V DC, 100 mA (reference value)
Switches & Pilot LightsSignaling LightsRelays & SocketsTimersContactorsTerminal BlocksCircuit Breakers
Operating Time
Release Time
Power Consumption
(approx.)
Insulation Resistance 100MΩ minimum (500V DC megger)
Dielectric Strength
Operating Frequency
Vibration Resistance
Shock Resistance
Mechanical Life 50,000,000 operations minimum
Electrical Life
Operating
Temperature
Operating Humidity 45 to 85% RH (no condensation)
Weight (approx.) SPDT: 24g, DPDT: 37g, 3PDT: 50g, 4PDT: 74g
Note: Above values are initial values.
1. Measured using 5V DC, 1A voltage drop method
2. Measured at the rated voltage (at 20°C), excluding contact bouncing
Release time of relays with diode: 40 ms maximum
3. Relays with indicator or diode: 1000V AC, 1 minute
4. For use under different temperature conditions, refer to Continuous Load Current vs. Operating Temperature Curve. The operating
temperature range of relays with indicator or diode is –25 to +40°C.
1
2
2
SPDT
DPDT
3PDT
4PDT
SPDT
DPDT
3PDT
4PDT
50mΩ maximum
20ms maximum
25ms maximum
20ms maximum
25ms maximum
SPDT AC: 1.1VA (50Hz), 1VA (60Hz) DC: 0.8W
DPDT AC: 1.4VA (50Hz), 1.2VA (60Hz) DC: 0.9W
3PDT AC: 2VA (50Hz), 1.7VA (60Hz) DC: 1.5W
4PDT AC: 2.5VA (50Hz), 2VA (60Hz) DC: 1.5W
Between live and dead parts: 2,000V AC, 1 minute
SPDT
Between contact and coil: 2,000V AC, 1 minute
Between contacts of the same pole: 1,000V AC, 1 minute
3
Between live and dead parts: 2,000V AC, 1 minute
DPDT
Between contact and coil: 2,000V AC, 1 minute
3PDT
Between contacts of different poles: 2,000V AC, 1 minute
4PDT
Between contacts of the same pole: 1,000V AC, 1 minute
Electrical: 1,800 operations/hour maximum
Mechanical: 18,000 operations/hour maximum
Damage limits: 10 to 55Hz, amplitude 0.5 mm
Operating extremes: 10 to 55Hz, amplitude 0.5 mm
Damage limits: 1,000m/s
Operating extremes: 200m/s2 (20G - SPDT, DPDT)
100m/s2 (10G - 3PDT, 4PDT)
DPDT 500,000 operations minimum (120V AC, 10A)
SPDT
3PDT
200,000 operations minimum (120V AC, 10A)
4PDT
SPDT
DPDT
4
–25 to +70°C (no freezing)
3PDT
4PDT
Relays & Sockets
2
(100G)
776
www.IDEC.com
Relays & Sockets
Load Current (A)
Load Current (A)
(RH2)
(RH2)
Load Current (A)
(RH3/RH4)
(RH3/RH4)
Load Current (A)
(RH1)
(RH2/RH3/RH4)
RH
Characteristics (Reference Data)
Electrical Life Curves
AC Load DC Load
1000
(RH1)
500
100
Life (× 10,000 operations)
1000
500
100
50
20
10
120V AC resistive
240V AC inductive
13579246810
120V AC inductive
120V AC resistive
240V AC resistive
1000
(RH1)
500
100
50
Life (¥ 10,000 operations)
20
10
1000
500
100
30V DC resistive
100V DC resistive
30V DC inductive
100V DC inductive
13579246810
Load Current (A)
30V DC resistive
Switches & Pilot Lights Signaling Lights Relays & Sockets Timers Contactors Terminal Blocks Circuit Breakers
50
Life (× 10,000 operations)
20
10
1000
500
100
50
Life (× 10,000 operations)
20
10
240V AC inductive
1 35792 46810
120V AC resistive
240V AC inductive
13579246810
Maximum Switching Capacity
10.0
5.0
AC resistive
240V AC resistive
120V AC inductive
AC inductive
240V AC resistive
120V AC inductive
Life (¥ 10,000 operations)
50
100V DC inductive
20
10
1000
500
100
Life (¥ 10,000 operations)
50
20
100V DC inductive
10
10.0
5.0
100V DC resistive
13579246810
30V DC resistive
30V DC inductive
100V DC resistive
13579246810
30V DC
inductive
Load Current (A)
Load Current (A)
AC resistive
AC inductive
1.0
0.5
0.1
15
10 100 200 30050
DC resistive
DC inductive
Load Voltage (V)
800-262-IDEC (4332) • USA & Canada
1.0
Load Current (A)
0.5
0.1
15
DC inductive
10 100 200 30050
Load Voltage (V)
DC resistive
777
RH
Relays & Sockets
Continuous Load Current vs. Operating Temperature Curve (Basic Type, With Check Button, and Top Bracket Mounting Type)
(RH1)
Switches & Pilot LightsSignaling LightsRelays & SocketsTimersContactorsTerminal BlocksCircuit Breakers
Note: The rated voltage is
90
80
70
60
50
40
30
20
10
0
1
applied to the coil.
DC Coil
AC Coil
3 5 7 92 4 6 8 10
Load Current (A)
100
Operating Temperature (°C)
(RH2)
100
90
80
70
60
50
40
30
Operating Temperature (°C)
20
10
0
1
Note: The rated voltage is
applied to the coil.
DC Coil
AC Coil
3 5 7 92 4 6 8 10
Load Current (A)
(RH3/RH4)
100
90
80
70
60
50
40
30
Operating Temperature (°C)
20
10
0
1
Note: The rated voltage is
applied to the coil.
AC/DC Coil
3 5 7 92 4 6 8 10
Load Current (A)
Internal Connection (View from Bottom)
Basic Type
SPDT DPDT 3PDT 4PDT With Check Button
Front
1
2
5
9
( – )
13 14
3
6
7
10
11
( + )
4
8
12
Contacts can be operated by pressing the
check button.
Pushbutton
With Indicator (-L type)
SPDT 3PDT 4PDT DPDT
Below
100V
AC/DC
100V
AC/DC
and over
1
5
9
13 14
( – )
1
5
9
13 14
( – )
( + )
( + )
1
2
5
6
9
13 14
( – )
1
5
9
( – )
13 14
( + )
2
6
( + )
4
8
1210
4
8
1210
1
2
5
6
9
10
13 14
( – )
1
2
5
6
9
10
( – )
13 14
With Diode (-D type)
SPDT DPDT 3PDT 4PDT
1
5
9
13 14
( – )
( + )
1
5
9
13 14
( + )
( – )
4
8
12
1
2
5
9
( – )
13
4
6
8
10
12
( + )
14
3
4
7
8
11
12
( + )
Below
24V AC/
DC
1
5
9
( – )
13
4
8
When the relay is energized,
12
( + )
the indicator goes on.
14
•Relay coils less than 100V
DC do not contain a protection diode (except DPDT).
•Relay coils below 100V
3
4
7
8
11
12
( + )
24V AC/
DC and
over
1
5
9
( – )
13
4
8
12
( + )
use LED indicator, coils
above 100V use neon lamp
indicator.
•LED color of DPDT model
is green
14
Contains a diode to absorb the back emf
1
2
3
5
6
9
10
( – )
13
4
7
8
11
12
( + )
14
generated when the coil is de-energized. The
release time is slightly longer. Available for DC
coil only.
•Diode Characteristics
Reverse withstand voltage: 1,000V
Forward current: 1A
778
www.IDEC.com
Relays & Sockets
RH
With Indicator LED & Diode (-LD type)
SPDT 3PDT 4PDT DPDT
Below
100V DC
1
5
9
13 14
( – )
Below
( + )
24V AC/
DC
1
5
9
( – )
13
4
8
12
( + )
14
Contains an LED indicator and
a surge absorber, and has the
same height as the basic type.
LED color of DPDT model is
4
green.
8
12
14
( + )
100V DC
and over
1
5
9
( – )
13 14
1
24V AC/
( + )
DC and
over
5
9
13
( – )
Dimensions (mm)
RH1B-U/RH1B-UL/RH1B-UD/RH1B-ULD RH2B-U/RH2B-UL/RH2B-UD/RH2B-ULD RH3B-U/RH3B-UL/RH3B-UD/RH3B-ULD
Total length from panel surface including relay socket
SH1B-05: 61.5 (63.5
35.6 max.
ø2.6 hole
)
max., SH1B-51: 39.6
Dimensions in the ( )
include a hold-down spring.
4.7
0.5
5.4
6.4
(
)
41.6
1
5
9
13
14
14
max.
27.5
Total length from panel surface including relay socket
SH2B-05: 61.5 (63.5
35.6 max.
ø2.6 hole
)
max., SH2B-51: 39.6
Dimensions in the ( )
include a hold-down spring.
4.7
0.5
6.4
(
1 4
5 8
9 12
13 14
21
41.6
)
max.
27.5
Total length from panel surface including relay socket
SH3B-05: 61.5 (63.5
35.6 max.
ø2.6 hole
)
max., SH3B-51: 39.6
Dimensions in the ( )
include a hold-down spring.
4.70.5
6.4 31
(
)
41.6
2
4
1
8
5
6
9
11
10
14
13
max.
Switches & Pilot Lights Signaling Lights Relays & Sockets Timers Contactors Terminal Blocks Circuit Breakers
27.5
RH4B-U/RH4B-UL/RH4B-UD/RH4B-ULD RH1B-UT RH2B-UT
Total length from panel surface including relay socket
SH4B-05: 61.5 (63.5
)
max., SH4B-51: 39.6
Dimensions in the ( )
include a hold-down spring.
(
)
41.6
4.70.5
ø2.6 hole
1 2 3 4
7 865
9 10 11 12
13 14
35.6 max.
6.4 41
max.
27.5
ø2.6 hole
38
43.2
3.5
14.5 35.6 max. 6.4
4.7
0.5
4.7
1
5
9
5.9
27.5
13
14
6.6
5.42
38
43.2
3.5
RH3B-UT RH4B-UT
3.5
38
43.2
21.5
31.5 35.6 max. 6.4
1010
4.7
ø2.6 hole
0.5
4.7
1 2 4
9 10 12
13
865
28
38
44
14
5.9
2
7.25
2
35.6 max. 6.4
42 max.
ø2.6 hole
101010
4.7
0.5
4.7
7.25
5.9
3.5
1 2 3 4
9 10 11
13
28
41.5
7 865
28
12
14
10
ø2.6 hole
21.5
2
35.6 max. 6.4
4.7
0.54.7
1 4
5 8
5.9
9 12
27.5
14
13
7.25
800-262-IDEC (4332) • USA & Canada
779
RH
Relays & Sockets
Dimensions con’t (mm)
RH1V2-U/RH1V2-UD RH2V2-U/RH2V2-UL/RH2V2-UD
35.6 max.
0.5
2
0.5
2
4.6
20.5
3-ø2.4 holes
4.7
7.15
12.5
6.6
4.4
Switches & Pilot LightsSignaling LightsRelays & SocketsTimersContactorsTerminal BlocksCircuit Breakers
35.6 max.
2
1.5
0.5
1
5
9
0.5
4.6
27.5
13
14
14
2-ø2 holes
RH3V2-U/RH3V2-UL/RH3V2-D RH4V2-U/RH4V2-UL/RH4V2-UD
11-ø2.4 holes
10 10
4.7
8-ø2.4 holes
0.5
1 4
5 8
9
27.5
12
14
13
5
21
14-ø2.4 holes
7.8
30
10
7.25
13.15 4.7
10
14.2
4.7
1 2 4
0.5 2
14
13
865
9 10 11
27.5
7.8
310.5
13.15
7.25
35.6 max. 4.6
Standard DIN Rail Mount Sockets
SH1B-05 SH2B-05
17
8
M3.5 Terminal
Screw
4.2
672.5
M3 Terminal
Screw
16
20
31.5
DIN Rail
18
(BNDN)
47
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
16
5.5 min.
4.4 max.
14.5
25
7.9 max.
(For terminals 1, 5, and 9)
4 max.
ø3.6 min.
5.9 max.
(For terminals 13 and 14)
4.8 min.
Terminal Arrangement
5
1
14
13
9
(
)
Top View
ø3.2 min.
672.5
SH3B-05 SH4B-05
32
8
M3.5 Terminal
Screw
4.2
672.5
36
40
31.5
DIN Rail
18
(BNDN)
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
47
36
4.4 max. 5.5 min.
14.5
25
7.9 max.
ø3.6 min.
Terminal Arrangement
5
8
6
2
1
4
141013
12
9
(
)
Top View
672.5
0.5 41
35.6 max. 4.6
22
8
M3.5 Terminal
Screw
4.2
26
30
42
8
M3.5 Terminal
Screw
4.2
46
50
47
1 2 3 4
9 10 11 12
13
31.5
18
14.5
25
47
31.5
25
7 865
18
14.5
14
DIN Rail
(BNDN)
4.4 max.
7.9 max.
27.5
DIN Rail
(BNDN)
7.8
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
26
5.5 min.
ø3.6 min.
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
46
4.4 max. 5.5 min.
7.9 max.
ø3.6 min.
13.15
7.25
Terminal Arrangement
8
5
1
4
14
13
12
9
(
)
Top View
Terminal Arrangement
5
8
1
47362
14
13
12 11
9
10
(
)
Top View
780
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Relays & Sockets
1.7
69
36
RH
Dimensions con’t (mm)
Finger-safe DIN Rail Mount Sockets
SH1B-05C SH2B-05C
17
M3.5 Terminal
7
Screw
5
ø
4.2
M3 Terminal
Screw
16
20
SH3B-05C SH4B-05C
32
M3.5 Terminal
7
Screw
ø
5
4.2
69
36
1.7
40
36
25
DIN Rail
(BNDN)
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
48
18.7
29.5
16
Ring terminals
cannot be used.
Terminal Arrangement
5
1
14
13
9
(
)
Top View
1.7 69
36
DIN Rail
25
(
)
BNDN
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
49
18.7
29.5
36
Ring terminals
cannot be used.
Terminal Arrangement
5
8
6
2
1
4
141013
12
9
(
)
Top View
1.7 69
22
26
30
7
42
46
50
M3.5 Terminal
Screw
ø5
4.2
7
Switches & Pilot Lights Signaling Lights Relays & Sockets Timers Contactors Terminal Blocks Circuit Breakers
25
DIN Rail
(
)
BNDN
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
49
18.7
29.5
When using
BAA/BAP: 33
25
ø5
4.2
49
18.7
29.5
26
Ring terminals
cannot be used.
DIN Rail
(BAA/BAP)
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
46
Ring type crimping
terminals cannot be used.
Terminal Arrangement
8
4
14
12
(
Top View
Terminal Arrangement
8
47362
14
12 11
10
(
Top View
5
1
13
9
)
5
1
13
9
)
Through Panel Mount Socket
SH1B-51 SH2B-51
SH3B-51 SH4B-51
800-262-IDEC (4332) • USA & Canada
781
RH
Relays & Sockets
Dimensions con’t (mm)
PCB Mount Sockets
SH1B-62 SH2B-62
4.7
7.35
4.7
12.5
6.95
11.85
31 min.*
6.65
6.6
5.95
6.8
21.3
10 10
36 min.
18 min.
4.4
ø2 holes
2-
(Tolerance ±0.1)
11-
(Tolerance 0.1)
ø2.4 holes
ø2.4 holes
3-
* 36 min. when using
hold-down springs
Switches & Pilot LightsSignaling LightsRelays & SocketsTimersContactorsTerminal BlocksCircuit Breakers
31
18
12.2
Terminal Arrangement
1
5
25.4
0.3
3
11
15
2
1.5
9
13
14
(Bottom View)
SH3B-62 SH4B-62
Terminal Arrangement
1
4
2
6
8
31
36
2
30.2
25.4
3
0.3
11
15
5
10
9
13
(Bottom View)
* 36 min. when using
hold-down springs
12
14
31 min.*
Terminal Arrangement
1
5
(Bottom View)
2
3
6
7
10
11
(Bottom View)
9412
13
12
8
14
4
8
14
* 34 min. when using
hold-down springs
29
21.2
2
31
45
2
39.2
3
11
15
25.4
0.3
Terminal Arrangement
1
5
9
25.4
0.3
13
* 36 min. when using
hold-down springs
3
11
15
6.85
4.7
12.5
31 min.*
2.85
5.65
4.7
12.5
6.6
29 min.*
45 min.
31.3
6.65
10 10 10
6.6
15.5
21.5 min.
10
8-ø2.4 holes
(Tolerance 0.1)
14-ø2.4 holes
(Tolerance 0.1)
782
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Relays & Sockets
Pulsation
)¥
Back emf
Operating Instructions
Operating Instructions
Driving Circuit for Relays
1. To ensure correct relay operation, apply rated voltage to the relay coil.
2. Input voltage for the DC coil:
A complete DC voltage is best for the coil power to make sure of stable relay
operation. When using a power supply containing a ripple voltage, suppress
the ripple factor within 5%. When power is supplied through a rectification
circuit, the relay operating characteristics, such as pickup voltage and dropout
voltage, depend on the ripple factor. Connect a smoothing capacitor for better
operating characteristics as shown below.
Smoothing
Capacitor
+
Relay
R
–
Emin Emax Emean
Ripple Factor (%
Emax = Maximum of pulsating current
Emin = Minimum of pulsating current
Emean = DC mean value
Emax –
Emean
3. Leakage current while relay is off:
When driving an element at the same time as the relay operation, special
consideration is needed for the circuit design. As shown in the incorrect
circuit below, leakage current (Io) flows through the relay coil while the relay
is off. Leakage current causes coil release failure or adversely affects the
vibration resistance and shock resistance. Design a circuit as shown in the
correct example.
Incorrect Correct
R
TE
Io
R
4. Surge suppression for transistor driving circuits:
When the relay coil is turned off, a high-voltage pulse is generated, causing a
transistor to deteriorate and sometimes to break. Be sure to connect a diode
to suppress the back electromotive force. Then, the coil release time becomes
slightly longer. To shorten the coil release time, connect a Zener diode
between the collector and emitter of the transistor. Select a Zener diode with
a Zener voltage slightly higher than the power voltage.
suppressing diode
+
Relay
R
–
Emin
DC
100%
Protection for Relay Contacts
1. The contact ratings show maximum values. Make sure that these values are
not exceeded. When an inrush current flows through the load, the contact
may become welded. If this is the case, connect a contact protection circuit,
such as a current limiting resistor.
2. Contact protection circuit:
When switching an inductive load, arcing causes carbides to form on the
contacts, resulting in increased contact resistance. In consideration of contact
reliability, contact life, and noise suppression, use of a surge absorbing circuit
is recommended. Note that the release time of the load becomes slightly
longer. Check the operation using the actual load. Incorrect use of a contact
protection circuit will adversely affect switching characteristics. Four typical
examples of contact protection circuits are shown in the following table:
This protection circuit can be used when the load
impedance is smaller than the RC impedance in an
Power
CR
Ind. Load
RC
+
Power
Diode
–
Power
Varistor
D
Varistor
Ind. Load
Ind. Load
3. Do not use a contact protection circuit as shown below:
This protection circuit is very effective in arc suppression when
opening the contacts. But, the capacitor is charged while the
contacts are opened. When the contacts are closed, the capacitor
Load
is discharged through the contacts, increasing the possibility of
contact welding.
Power
C
AC load power circuit.
•R: Resistor of approximately the same resistance
value as the load
•C:0.1 to 1 µF
This protection circuit can be used for both AC and
DC load power circuits.
R: Resistor of approximately the same resistance
value as the load
C: 0.1 to 1 µF
This protection circuit can be used for DC load power
circuits. Use a diode with the following ratings.
Reverse withstand voltage: Power voltage of the
load circuit x 10
Forward current: More than the load current
This protection circuit can be used for both AC and
DC load power circuits.
For a best result, when using a power voltage of 24
to 48V AC/DC, connect a varistor across the load.
When using a power voltage of 100 to 240V AC/DC,
connect a varistor across the contacts.
Switches & Pilot Lights Signaling Lights Relays & Sockets Timers Contactors Terminal Blocks Circuit Breakers
Generally, switching a DC inductive load is more difficult than switching a DC
resistive load. Using an appropriate arc suppressor, however, will improve the
switching characteristics of a DC inductive load.
Soldering
1. When soldering the relay terminals, use a soldering iron of 30 to 60W, and
quickly complete soldering (within approximately 3 seconds).
2. Use a non-corrosive rosin flux.
800-262-IDEC (4332) • USA & Canada
Power
C
This protection circuit is very effective in arc suppression when
opening the contacts. But, when the contacts are closed, a current
Load
flows to charge the capacitor, causing contact welding.
817
Operating Instructions
Other Precautions
Relays & Sockets
Operating Instructions con’t
1. General notice:
To maintain the initial characteristics, do not drop or shock the relay.
The relay cover cannot be removed from the base during normal operation. To
Switches & Pilot LightsSignaling LightsRelays & SocketsTimersContactorsTerminal BlocksCircuit Breakers
maintain the initial characteristics, do not remove the relay cover.
Use the relay in environments free from condensation, dust, sulfur dioxide
(SO
), and hydrogen sulfide (H2S).
2
Make sure that the coil voltage does not exceed applicable coil voltage range.
Safety Precautions
• Turn off the power to the relay before starting installation, removal, wiring,
maintenance, and inspection of the relays. Failure to turn power off may
cause electrical shock or fire hazard.
• Observe specifications and rated values, otherwise electrical shock or fire
hazard may be caused.
• Use wires of the proper size to meet voltage and current requirements. Tighten the terminal screws on the relay socket to the proper tightening torque.
• Surge absorbing elements on AC relays with RC or DC relays with diode are
provided to absorb the back electromotive force generated by the coil. When
the relay is subject to an excessive external surge voltage, the surge absorbing element may be damaged. Add another surge absorbing provision to the
relay to prevent damage.
2. UL and CSA ratings may differ from product rated values determined by IDEC.
3. Do not use relays in the vicinity of strong magnetic field, as this may affect
relay operation.
Precautions for the RU Relays
• Before operating the latching lever of the RU relay, turn off the power to
the RU relay. After checking the circuit, return the latching lever to the original position.
• Do not use the latching lever as a switch. The durability of the latching lever
is a minimum of 100 operations.
• When using DC loads on 4PDT relays, apply a positive voltage to terminals of
neighboring poles and a negative voltage to the other terminals of neighboring poles to prevent the possibility of short circuits.
• DC relays with a diode have a polarity in the coil terminals. Apply the DC voltage to the correct terminals.
818
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