Class H(K), J and R modular ferrule fuse blocks

Catalog symbol:

• RM25_ (250 V)

• RM60_ (600 V)

Description: Bussmann™ series Class R modular fuse blocks increase versatility, reduce labor and enhance safety for any panel or electrical system design. Available for the full Class R fuse amp range.

These fuse blocks feature a standard fuse clip reinforcing spring for enhanced electrical contact between the block 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

• 250V

• 600V

• Amps up to 600

• 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 60 A)

• RoHS Compliant

• REACH declaration available upon requestSpecifications

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 60 A)

• Tin-plated aluminum (box lug)

• Covers: Thermoplastic

Conductors

• See catalog numbers for details and torque specifications

Class R 250V 30 and 60 amp block catalog numbers

* Covers sold separately, order one cover per pole.

**Open fuse indication requires 90 volts minimum and closed circuit to operate.

Class R 250V 30 and 60 amp block terminals and conductors

* 3/16” Quick-connect terminal maximum ampacity dependent on female spade connector and wire ratings.

Recommended Bussmann series fuses:

Recommended accessories for 30 and 60 amp blocks

Class R 250V 100 to 600 amp knifeblade blocks and covers

* Covers sold separately, order one cover per pole.

**Open fuse indication requires 90 volts minimum and closed circuit to operate. *** Ratings for copper and aluminum conductors except where otherwise noted

Recommended Bussmann series fuses:

Class R 600V 30 and 60 amp block catalog numbers

* Covers sold separately, order one cover per pole.

**Open fuse indication requires 90 volts minimum and closed circuit to operate

Class R 600V 30 and 60 amp block terminals and conductors

Recommended Bussmann series fuses

Recommended accessories for 30 and 60 amp blocks

Class R 600V 100 to 600 amp knifeblade blocks and covers

* 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.

Recommended Bussmann series fuses: