Class J modular ferrule and knifeblade
fuse blocks
Knifeblade fuse blocks from 100 to 600 amps
feature phase barriers between poles for additional
safety with up to four mounting holes per pole
increase installation flexibility. All knifeblade blocks
meet UL creep and clearance requirements for
Industrial Power Circuits (UL 508 and UL 845).
Additionally, the 200 to 600 amp blocks meet the
higher UL creep and clearance requirements for
Power Distribution Standards (UL 98, UL 67, UL
489, UL 891 and UL 869A)
All blocks have optional IP20 finger-safe high
clarity, see-through covers for inspecting wire
terminations or thermography measurements
without removal. All covers enhance safety by
featuring probe holes for easier, safer testing
and a lockout/tagout capability. These covers
also have optional open fuse indication to speed
troubleshooting.
Easy circuit identification is available for 30 and
60 amp blocks and covers with universal marker
labels.
Catalog symbol:
•
JM60_
Description:
Bussmann® series Class J modular fuse blocks
increase versatility, reduce labor and enhance
safety for any panel or electrical system design.
Available for the full Class J fuse amp range.
These fuse blocks feature a standard fuse
clip reinforcing spring for enhanced electrical
contact between the blcok and fuse. All blocks
are available as single-pole versions that snap
together for the required number of poles, or as
factory configured 2-, and 3-pole versions to meet
stocking requirements.
The modular design permits reducing inventory,
assembly time and labor with tool-less assembly
of multiple poles at point of use.
Ferrule fuse blocks up to 60 amps save panel
space with the smallest width dimension on the
market and feature DIN-Rail and panel mount
versatility so that one product can be used for
multiple applications with lower inventory cost.
Specifications:
Ratings
•
Volts 600 V
•
Amps up to 600 A
•
Withstand 200 kA RMS Sym
Agency information
•
Blocks:
®
• UL
Listed E14853 — IZLT and IZLT7
®
• CSA
• CE
• RoHS Compliant
• REACH declaration available upon request
•
Covers:
• UL Listed E58836 - JDVS
• CSA Certified 47235-6225-01 (30 and 60A)
• RoHS Compliant
• REACH declaration available upon request
Certified 47235-6225-01
Technical Data 10488
Class J modular ferrule and knifeblade fuse blocks
Effective August 2017
Poles
•
1-, 2-, 3-pole units factory assembled
•
Single-pole units snap together to create desired number of poles
Flammability ratings
•
Blocks: UL 94V0, self-extinguishing
•
Covers: UL 94HB, self-extinguishing
Operating and storage temperature range
•
Blocks -40°C to +120°C
•
Covers;
• Non-Indicating -40°C to +120°C
• Indicating -20°C to +90°C*
* Indication requires minimum 90V and closed circuit to illuminate.
Materials
•
Base: Thermoplastic
•
Terminals:
• Tin-plated copper brass (30 and 60A)
• Tin-plated aluminum (box lug)
•
Covers: Thermoplastic
Conductors
•
See catalog numbers for details and torque specifications.
Optional see-through covers provide IP20 finger-safe
protection and feature a lockout/tagout provision
to improve electrical safety. These covers are
also available with open fuse indicating
version for faster troubleshooting.
Order separately, one cover per
block pole.
Standard dual lugs on
600A blocks and optional
dual lugs on 400A blocks
for easier wiring using two,
smaller conductors.
Modular Class J ferrule and knifeblade fuse blocks
30 and 60 amp ferrule fuse blocks have DIN-rail and panel mounting capability,
the modular designs allows blocks toand snap together for the desired number
of poles. They accept optional snap-on covers for IP20 finger-safe protection and
feature a lockout/tagout to improve electrical safety.
On blocks rated from 100 to 600A, the optional covers can be completely removed
for servicing or simply hinged open.
100 to 600 amp knifeblade fuse blocks are panel mount with multiple holes for
installation flexibility and the modular design allows blocks to snap together for the
desired number of poles. They accept optional snap-on covers for IP20 finger-safe
protection and feature a lockout/tagout provision to improve electrical safety.
2
Class J modular ferrule and knifeblade fuse blocks
Toolless interlocking modular design
for easy point-of-use assembly
DIN-rail or panel mounting
on each pole provides
installation flexibility
*No fuse derating necessary.
Marker label provision for easy
circuit dientification
Optional see-through, snap-on
cover for easy visual inspection
Optional open fuse indication
speeds troubleshooting
Vent slots improve cooling*
Lockout/tagout feature
improves safety
Probe holes for easy testing
without removing cover
3
Technical Data 10488
Class J modular ferrule and knifeblade fuse blocks
Effective August 2017
Dimensions; 30A Class J block - in (mm)
28
1.1
12.5 87
JM60030-1CR
3.4
R3
.1
55
2.2
JM60030-2CR
PROVISION FOR
MARKING LABEL
JM60030-3CR
46
1.8
17.7
28
29
1.1
58
1.1
56
2.2
2.3
83
3.3
PROVISION FOR
MARKING LABEL
110
CVR-J-60030
(NON INDICATING)
CVRI-J-60030
(WITH INDICATION)
4.3
84
3.3
4
LOCKOUT TAGOUT RINGS
JM60030-1CR
SHOWN WITH COVER
Class J modular ferrule and knifeblade fuse blocks
Dimensions; 60A Class J block - in (mm)
39
1.5
38
1.5
R3
.1
5.2
38
JM60060-1CR
7
.3
94
3.7
18.7
1.5
Technical Data 10488
Effective August 2017
76
3.0
JM60060-2CR
75
3.0
PROVISION FOR
MARKER LABEL
PROVISION FOR
MARKER LABEL
JM60060-3CR
53
2.1
18.7
65
2.6
PROVISION FOR
114
MARKER LABEL
4.5
CVR-J-60060
(NON INDICATING)
CVRI-J-60060
(WITH INDICATION)
119
4.7
113
4.5
LOCKOUT TAGOUT RINGS
JM60060-1CR
SHOWN WITH COVER
5
Technical Data 10488
Class J modular ferrule and knifeblade fuse blocks
Effective August 2017
Installing/removing covers
Install cover:
Position cover
over block and
push straight
down until it
snaps/clicks
into place.
For larger conductors, trim center tab
at notch as show in detail A.
Trim tab
here
Open cover:
Using both
outside handles,
pull straight up.
A
Installing blocks on DIN-Rail
Place one edge of DIN-Rail in fuse block base, then rotate block down until it clicks into place.
Detail A
6
Class J modular ferrule and knifeblade fuse blocks
Table 6: Class J 100 to 600 amp knifeblade blocks and covers
Technical Data 10488
Effective August 2017
Fuse
amp
rangePolesCatalog nos.
1JM60100-1CR
70-100
110-200
225-400
450-600
* Covers sold separately.
** Open fuse indication requires 90 volts minimum and closed circuit to operate.
*** Ratings for copper and aluminum conductors except where otherwise noted.
2JM60100-2CR
3JM60100-3CRCu 10-14 AWG; Al 10-12 AWG—4.0 (35)
1JM60200-1CR
2JM60200-2CR
3JM60200-3CR
1JM60400-1CR
2JM60400-2CR
3JM60400-3CR
1JM60400-1MW22
2JM60400-2MW22
3JM60400-3MW22
1JM60600-1CR
2JM60600-2CR
3JM60600-3CR
Covers*Conductors***
Non-indicating Indicating**Solid and strandedFine stranded