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Simplify design and installation while reducing footprint
New snap-together, Bussmann series modular Class H(K), J and R ferrule fuse blocks speed up installation, increase flexibility and require minimal panel space
Eaton’s BussmannTM series HM, JM and RM ferrule fuse blocks feature a modular design that allows assembly of the required poles at point of use.
Available for Class H(K), J and R ferrule fuses, these blocks have features and accessories that add versatility, reduce labor and help enhance safety of any panel design.
Fuse blocks can be ordered as 1-pole versions or factory configured 2- and 3-pole versions, and feature the smallest width in the market, consuming minimal panel space.
Features
• Modular, snap-together design provides tool-less assembly of multiple poles to save inventory and reduce assembly time.
• DIN-Rail and panel mount versatility allows one product to be used for multiple applications and lowers inventory cost.
• Optional see-through covers enhance safety with IP20 finger-safe protection, lockout/ tagout capability and optional open circuit indication.
New snap-together, Bussmann series modular Class H(K), J and R ferrule fuse blocks speed up installation, increase flexibility and require minimal panel space.
• Easy circuit identification with available universal marker labels for fuse blocks and covers.
Specifications
Ratings:
• Volts
• Class H(K) - 250 V, 600 V
• Class J - 600 V
• Class R - 250 V, 600 V
• Amps
• Up to 60A
• Withstand
• Class J and R - 200 kA
• Class H(K) - 10 kA
Agency information:
• Blocks
• UL® Listed E14853 - IZLT and IXLT2
• CSA® Certified 47235-622501
• RoHS compliant
• Covers
• UL Listed E58836 - JDVS
• CSA Certified 47235-622501
• RoHS compliant
Flammability ratings:
• Blocks
• UL 94V0, self-extinguishing
• Covers
• UL 94HB, selfextinguishing
Operating and storage temperature range:
• Blocks
• -40°C to +120°C
• Non indicating covers
• -40°C to +120°C
• Indicating covers
• -20°C to +90°C
Materials:
• Base
• Thermoplastic
• Terminals
• Tin-plated copper brass
• Covers
• Thermoplastic
Terminal type*
Fuse class
Box lug
Box lug/slot screw
#10-32 Phil-slot screw
Screw with quick-connect*
Pressure plate
Volts
Fuse Amp range
Class H
HM25030-_CR
—
HM25030-_SR
HM25030-_QR
HM25030-_PR
250
up to 30
HM25060-_CR
—
—
—
HM60030-_CR
HM60030-_SR
—
HM60030-_PR
600
HM60060-_CR
—
—
—
Class R
RM25030-_CR
RM25030-_SR
RM25030-_QR
HM25030-_PR
250
RM25060-_CR
—
—
—
RM60030-_CR
RM60030-_SR
—
RM60030-_PR
600
RM60060-_CR
—
—
—
Class J
JM60030-_CR
JM60030-_CHR
JM60030-_SR
—
JM60030-_PR
600
JM60060-_CR
JM60060-_CHR
—
—
—
*All versions available in 1-, 2-, or 3-pole factory assembled configurations (ex., JM60060-1CR, JM60060-2CR, JM60060-3CR).
**3/16” Quick ‐connect terminal maximum ampacity rating dependant on female spade connector and wire ratings.
Class J modular ferrule and knifeblade fuse blocks
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..
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.
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® Certified 47235-6225-01
• 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
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.
Modular Class J ferrule and knifeblade fuse blocks
Terminal Type
Optional covers*
Fuse amp range
Poles
Box lug/slot screw
Box lug/hex screw
#10-32 Phil-slot screw
Pressure plate
Indicating**
Non-indicating
up to 30
1
JM60030-1CR
JM60030-1CHR
JM60030-1SR
JM60030-1PR
CVRI-J-60030
CVR-J-600302
2
JM60030-2CR
JM60030-2CHR
JM60030-2SR
JM60030-2PR
3
JM60030-3CR
JM60030-3CHR
JM60030-3SR
JM60030-3PR
35 to 60
1
JM60060-1CR
JM60060-1CHR
—
—
CVRI-J-60060
CVR-J-600602
2
JM60060-2CR
JM60060-2CHR
3
JM60060-3CR
JM60060-3CHR
* Covers sold separately, one cover per pole.
** Open fuse indication requires 90 volts minimum and closed circuit to operate.
Fuse amp range
Poles
covers*
Conductors***
Catalog nos.
Non-indicating
Indicating**
Solid and stranded
Fine stranded
Torque N•m (lb-in)
70-100
1
JM60100-1CR
CVR-J-60100
CVRI-J-60100
—
Cu 1-3 AWG
6.2 (55)
1/0-3 AWG; (2) Cu 4-6 AWG
Cu 4-6 AWG
5.6 (50)
2
JM60100-2CR
2 4-6 AWG; (2) Cu 8 AWG
Cu 8 AWG
5.1 (45)
8 AWG; (2) Cu 10-14 AWG
—
4.5 (40)
3
JM60100-3CR
Cu 10-14 AWG; Al 10-12 AWG
—
4.0 (35)
110-200
1
JM60200-1CR
CVR-J-60200
CVRI-J-60200
250kcmil-1 AWG
Cu 3/0-1 AWG
42 (375)
2
JM60200-2CR
2-6 AWG; (2) Cu 2-6 AWG
Cu 2-6 AWG
31 (275)
3
JM60200-3CR
225-400
1
JM60400-1CR
CVR-J-60400
CVRI-J-60400
600kcmil
N/A
57 (500)
2
JM60400-2CR
500kcmil-4 AWG
51 (450)
(2) Cu 3/0 - 4 AWG
57 (500)
3
JM60400-3CR
(2) Al 3/0 - 4 AWG
34 (300)
1
JM60400-1MW22
250kcmil-1 AWG
Cu 3/0-1 AWG
42.37 (375)
2
JM60400-2MW22
2-6 AWG; (2) Cu 2-6 AWG
Cu 2-6 AWG
31.07 (275)
3
JM60400-3MW22
450-600
1
JM60600-1CR
CVR-J-60600
CVRI-J-60600 2 (2)
500kcmil-4 AWG
N/A
51 (450)
2
JM60600-2CR
3
JM60600-3CR
Fuse amp range
Poles
Covers*
Conductors***
Catalog nos.
Non-indicating
Indicating**
Solid and stranded
Fine stranded
Torque N•m (lb-in
70-100
1
JM60100-1CR
CVR-J-60100
CVRI-J-60100
—
Cu 1-3 AWG
6.2 (55)
1/0-3 AWG; (2) Cu 4-6 AWG
Cu 4-6 AWG
5.6 (50)
2
JM60100-2CR
2 4-6 AWG; (2) Cu 8 AWG
Cu 8 AWG
5.1 (45)
8 AWG; (2) Cu 10-14 AWG
—
4.5 (40)
3
JM60100-3CR
Cu 10-14 AWG; Al 10-12 AWG
—
4.0 (35)
110-200
1
JM60200-1CR
CVR-J-60200
CVRI-J-60200
250kcmil-1 AWG
Cu 3/0-1 AWG
42 (375)
2
JM60200-2CR
2-6 AWG; (2) Cu 2-6 AWG
Cu 2-6 AWG
31 (275)
3
JM60200-3CR
225-400
1
JM60400-1CR
CVR-J-60400
CVRI-J-60400
600kcmil
N/A
57 (500)
2
JM60400-2CR
500kcmil-4 AWG
51 (450)
(2) Cu 3/0 - 4 AWG
57 (500)
3
JM60400-3CR
(2) Al 3/0 - 4 AWG
34 (300)
1
JM60400-1MW22
250kcmil-1 AWG
Cu 3/0-1 AWG
42.37 (375)
2
JM60400-2MW22
2-6 AWG; (2) Cu 2-6 AWG
Cu 2-6 AWG
31.07 (275)
3
JM60400-3MW22
450-600
1
JM60600-1CR
CVR-J-60600
CVRI-J-60600 2 (2)
500kcmil-4 AWG
N/A
51 (450)
2
JM60600-2CR
3
JM60600-3CR
* 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.
Features and benefits:
• Modular, snap-together design permits multi-pole assembly at point-of-use, reducing inventory cost and complexity.
• See-through covers with test probe holes and optional open fuse indication reduce maintenance time by making inspection possible without removing the cover.
• High Short-Circuit Current Rating (SCCR), up to 200kA, helps ensure compliance with NEC® 110.10 requirements
Description
Amps
Data sheet no.
Ultimate protection Low-Peak™ LPJ time-delay fuses
up to 60
1006
70 to 600
1007
Advanced protection Limitron™ JKS fast-acting fuses
up to 60
1026
70 to 600
1027
High speed Class J DFJ drive fuses
up to 600
1048
Terminal type
AWG type/range
AWG
Torque N•m(lb-in)
Box lug
75°C Cu 2-14, AL 2-8
2-3
5.6 (50)
4-6
5.1 (45)
8
4.5 (40)
10-14
4.0 (3.5)
10-32 Phil-slot screw
75/90°C Cu 10-18
10-18
2.3 (20)
Pressure plate
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