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Eaton's Bussmann Division fuses and surge circuit protection ...

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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

•  250 V

•  600 V

•  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 90 V 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 250 V 30 and 60 amp block catalog numbers

Fuse amp range

 Poles

Terminal type

Optional covers*

Box lug/slot screw

Box lug/hex screw

#10-32    Phil-slot screw

Screw with  quick-connect*

Pressure plate 

Indicating**

Non-indicating

UP to 30

1

RM25030-1CR  

RM25030-1CHR

RM25030-1SR

RM25030-1QR

RM25030-1PR

CVRI-RH-25030

CVR-RH-250302

2

RM25030-2CR

RM25030-2CHR

RM25030-2SR

RM25030-2QR

RM25030-2PR

3

RM25030-3CR

RM25030-3CHR

RM25030-3SR

RM25030-3QR

RM25030-3PR

35 to 60

1

RM25060-1CR

RM25060-1CHR

CVRI-RH-25060 

CVR-RH-250602

2

RM25060-2CR

RM25060-2CHR

3

RM25060-3CR

RM25060-3CHR

* Covers sold separately, order one cover per pole. 

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

 

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

Terminal type

75/90°C AWG type/range

AWG

Torque N•m(lb-in)

Box Lug (“CR” Option)

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)

Screw with quick-connect*

Pressure plate

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

 

Recommended Bussmann series fuses:

Description

Volts

Amps

Data  sheet no

Ultimate protection time-delay  Low-Peak™ LPN

250V

up to 60

1003

Advanced protection fast-acting  Limitron™ KTN-R

All

1043

Advanced protection energy   efficient  time-delay Fusetron™ FRN-R

up to 60

1019


Recommended accessories for 30 and 60 amp blocks

Description

Catalog no.

DIN-Rail end stops

BRKT-ND

BRKT-NDSCREW2


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

Fuse amp range

Poles

Catalog nos

Covers*

Covers* Conductors***

Indicating** 

Non-indicating

Solid and stranded

Fine stranded

Torque    N•m (lb-in)

70-100

1

RM25100-1CR

CVRI-RH-25100

CVR-RH-25100

Cu 1-3 AWG

6.2 (55)

1/0-3 AWG; (2) Cu 4-6 AWG

Cu 4-6 AWG

5.6 (50)

2

RM25100-2CR

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

RM25100-3CR

Cu 10-14 AWG; Al 10-12 AWG

4.0 (35

110-200

1

RM25200-1CR

CVRI-RH-25200

CVR-RH-25200

250 kcmil-1 AWG

Cu 3/0-1 AWG 

42 (375)

2

RM25200-2CR

2-6 AWG; (2) Cu 2-6 AWG

Cu 2-6 AWG

31 (275)

3

RM25200-3CR

225-400

1

RM25400-1CR

CVRI-RH-25400

CVR-RH-25400

600 kcmil

N/A

57 (500)

2

RM25400-2CR

500 kcmil-4 AWG

51 (450)

3

RM25400-3CR

(2) Cu 3/0 - 4 AWG

57 (500)

(2) Al 3/0 - 4 AWG

34 (300)

450-600

1

RM25600-1CR

CVRI-RH-25600 

CVR-RH-25600

2 (2) 500 kcmil-4 AWG

N/A

51 (450

2

RM25600-2CR

3

RM25600-3CR

* 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:


Description

Volts

Amps

Data    sheet no

Ultimate protection time-delay  Low-Peak™ LPN

250V

70 to 600

1004

Advanced protection fast-acting  Limitron™ KTN-R

All

1043

Advanced protection energy   efficient  time-delay Fusetron™ FRN-R 

70 to 600

1020



Class R 600 V 30 and 60 amp block catalog numbers

Fuse amp range

 Poles

Terminal type

Optional covers*

Box lug/slot screw

Box lug/hex screw

#10-32    Phil-slot screw

Pressure plate 

Indicating**

Non-indicating

UP to 30

1

RM60030-1CR

RM60030-1CHR

RM60030-1SR

RM60030-1PR

CVRI-RH-60030

CVR-RH-60030

2

RM60030-2CR

RM60030-2CHR

RM60030-2SR

RM60030-2PR

3

RM60030-3CR

RM60030-3CHR

RM60030-3SR

RM60030-3PR

35 to 60

1

RM60060-1CR

RM60060-1CHR

CVRI-RH-60060 

CVR-RH-60060

2

RM60060-2CR

RM60060-2CHR

3

RM60060-3CR

RM60060-3CHR

* Covers sold separately, order one cover per pole.

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

 

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

Terminal type


75/90°C AWG type/range

AWG

Torque N•m(lb-in)

Box Lug (“CR” Option)

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


Recommended Bussmann series fuses

Description

Volts

Amps

Data    sheet no

Ultimate protection time-delay  Low-Peak™ LPS

600V

up to 60

1001

Advanced protection fast-acting  Limitron™ KTS-R

All

1044

Advanced protection energy   efficient  time-delay Fusetron™ FRS-R

up to 60

1017


Recommended accessories for 30 and 60 amp blocks

Description

Catalog no.

DIN-Rail end stops

BRKT-ND

BRKT-NDSCREW2


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

Fuse amp range

Poles

Catalog nos

Covers*

Covers* Conductors***

Indicating** 

Non-indicating

Solid and stranded

Fine stranded

Torque    N•m (lb-in)

70-100

1

RM60100-1CR

CVRI-RH-60100

CVR-RH-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

RM60100-2CR

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

RM60100-3CR

Cu 10-14 AWG; Al 10-12 AWG

4.0 (35

110-200

1

RM60200-1CR

CVRI-RH-60200

CVR-RH-60200

250 kcmil-1 AWG

Cu 3/0-1 AWG 

42 (375)

2

RM60200-2CR

2-6 AWG; (2) Cu 2-6 AWG

Cu 2-6 AWG

31 (275)

3

RM60200-3CR

225-400

1

RM60400-1CR

CVRI-RH-60400

CVR-RH-60400

600 kcmil

N/A

57 (500)

2

RM60400-2CR

500 kcmil-4 AWG

51 (450)

3

RM60400-3CR

(2) Cu 3/0 - 4 AWG

57 (500)

(2) Al 3/0 - 4 AWG

34 (300)

450-600

1

RM60600-1CR

CVRI-RH-60600

CVR-RH-60600

2 (2) 500 kcmil-4 AWG

N/A

51 (450

2

RM60600-2CR

3

RM60600-3CR

* 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.

 

Recommended Bussmann series fuses:

Description

Volts

Amps

Data    sheet no

Ultimate protection time-delay  Low-Peak™ LPS

600V

70 to 600

1004

Advanced protection fast-acting  Limitron™ KTS-R

All

1044

Advanced protection energy   efficient  time-delay Fusetron™ FRS-R

70 to 600

1018