Class R and H (K) knifeblade fuse blocks - 250 V

RM Class R and HM Class H(K) modular knifeblade fuse blocks from 100 to 600 amps

Modular 70 to 600 amp 250 volt Class R and H(K) knifeblade fuse blocks with optional covers and blown fuse indication.

Blocks dovetail together to assemble required number of poles.

Optional covers provide additional safety and indication feature speeds troubleshooting. See product broachure no. 3192 for details.

Product profile no. 3196

Product brochure no. 3192

250 V and 600 V 30, 60, 100, 200, 400 and 600 A RM blocks data sheet no. 10489

Product line overview video

Drawing downloads (PDF, DXF/DWG, IGS, STEP)

Catalog Number
Class H(K)
(# of Poles)
Catalog Number
Class R
(# of Poles)
Covers
without
Indication
Covers
with
Indication*

Wire Range -
Torque N·m (Lb-In)
Cooper
Bussmann
Fuses
70 to 100 Amp Fuses
HM25100-1CR (1) RM25100-1CR (1) CVR-RH-25100
CVRI-RH-25100
· 1/0-3 AWG - 5.6 (50)
· 4-6 AWG - 5.1 (45)
· 8 AWG - 4.5 (40)
· 10-14 AWG - 4.0 (35)
Class H(K):
NON
Class R:
LPN-RK_SP
LPN-RK_SPI**
KTN-R

HM25100-2CR (2) RM25100-2CR (2)
HM25100-3CR (3)
RM25100-3CR (3)
110 to 200 Amp Fuses
HM25200-1CR (1) RM25200-1CR (1) CVR-RH-25200 CVRI-RH-25200 · 250 MCM-1 AWG - 42 (375)
· 2-6 AWG - 31 (275)
Class H(K):
NON
Class R:
LPN-RK_SP
LPN-RK_SPI**
KTN-R

HM25200-2CR (2) RM25200-2CR (2)
HM25200-3CR (3) RM25200-3CR (3)
225 to 400 Amp Fuses
HM25400-1CR (1) RM25400-1CR (1) CVR-RH-25400
CVRI-RH-25400
· 600kcmil - 57 (500)
· 500kcmil-4 AWG - 51 (450)
· Cu Dual 3/0 - 4 AWG - 57 (500)
· Al Dual 3/0 - 4 AWG - 34 (300)
Class H(K):
NON
Class R:
LPN-RK_SP
LPN-RK_SPI**
KTN-R

HM25400-2CR (2) RM25400-2CR (2)
HM25400-3CR (3)
RM25400-3CR (3)
450 to 600 Amp Fuses
HM25600-1CR (1) RM25600-1CR (1) CVR-RH-25600
CVRI-RH-25600
· 2 x Cu 500kcmil-4 AWG - 51 (450)
Class H(K):
NON
Class R:
LPN-RK_SP
LPN-RK_SPI**
KTN-R
HM25600-2CR (2) RM25600-2CR (2)
HM25600-3CR (3) RM25600-3CR (3)
null null null null null

*Covers sold separately. Blown fuse indication requires 90V minimum and closed circuit to operate.
** With easyID visual blown fuse indication.