Mersen
TR4R
Ferraz Shawmut TR4R Class RK5 250VAC Fuse (Lot of 7)
In stock
Free shippingShips next business day
$46.95 / lot of 7
Circuit Breakers, Fuses & Protection
3,515 listings · 3,456 in stock
3,515 Circuit Breakers, Fuses & Protection listings in 8 categories, from makers like Bussmann, Mersen, Eaton. Surplus, used and new-surplus, every item photographed. Free shipping in the lower 48 and zero lead time on everything in stock.
Categories in Circuit Breakers, Fuses & Protection
- Fuses1,575 in stock
- Circuit Breakers & Accessories827 in stock
- Miniature & DIN Rail Circuit Breakers307 in stock
- Fuse Holders & Fuse Blocks253 in stock
- Disconnect & Safety Switches206 in stock
- Molded Case Circuit Breakers131 in stock
- Surge Protection & Ground Fault127 in stock
- Protective & Monitoring Relays30 in stock
Mersen
TR3R
Ferraz Shawmut TR3R Class RK5 250VAC Fuse (Lot of 4)
Only 1 lot left
Free shippingShips next business day
$22.95 / lot of 4
Mersen
TRS6
Ferraz Shawmut TRS6 - 1/4R Class RK5 600VAC Fuse (Lot of 10)
Only 1 lot left
Free shippingShips next business day
$42.95 / lot of 10
Bullet
ECNR10
Bullet ECNR10 Class RK5 250VAC Fuse (Lot of 8)
Only 1 lot left
Free shippingShips next business day
$48.95 / lot of 8
Bullet
ECNR3.2
BULLET ECNR3.2 Class RK5 Time Delay Fuse 3.2A 250VAC Dual Element 10/ORDER
Only 2 left
Free shippingShips next business day
$19.99
Bussmann
LPN-RK-9
Bussmann LPN-RK-9 Low-Peak 9A 250VAC Class RK5 Time Delay Fuse 3/ORDER
Only 1 left
Free shippingShips next business day
$13.99
Bussmann
LPN-RK-2-1/2
Bussman Low-Peak LPN-RK-2-1/2 Class RK5 250VAC Fuse (Lot of 5)
Only 1 lot left
Free shippingShips next business day
$20.95 / lot of 5
Bussmann
FRS-R-3
Bussman FRS-R-3 Class RK5 600VAC Fuse (Lot of 12)
Only 2 lots left
Free shippingShips next business day
$57.95 / lot of 12
Bullet
ECNR8
Bullet ECNR8 Class RK5 250VAC Fuse (Lot of 10)
Only 3 lots left
Free shippingShips next business day
$44.95 / lot of 10
Bussmann
HAC-R-5
Bussman HAC-R-5 Class RK5 250VAC Fuse (Lot of 5)
Only 1 lot left
Free shippingShips next business day
$31.95 / lot of 5
Bussmann
FRS-R-3
Bussmann FRS-R-3 3A 600VAC Class RK5 Time Delay Dual Element Fuse 10/ORDER
Only 1 left
Free shippingShips next business day
$34.99
Bussmann
HAC-R-5
Bussman HAC-R-5 Class RK5 250VAC Fuse (Lot of 10)
Only 4 lots left
Free shippingShips next business day
$65.95 / lot of 10
Bussmann
FRN-R-10
Bussman FRN-R-10 Class RK5 250VAC Fuse (Lot of 6)
Only 1 lot left
Free shippingShips next business day
$17.95 / lot of 6
Edison
ECSR6
Edison ECSR6 Class RK5 600VAC Fuse (Lot of 10)
Only 4 lots left
Free shippingShips next business day
$72.95 / lot of 10
Edison
ECSR.5
Edison ECSR.5 Class RK5 600VAC Fuse (Lot of 8)
In stock
Free shippingShips next business day
$42.95 / lot of 8
Edison
ECSR5
Edison ECSR5 Class RK5 600VAC Fuse (Lot of 10)
Only 1 lot left
Free shippingShips next business day
$2,004.69 / lot of 10
Littelfuse
FLN-R-6/10
Littlefuse FLN-R-6/10 Class RK-5 250VAC SLO BLO Fuse (Lot of 10)
Only 1 lot left
Free shippingShips next business day
$137.95 / lot of 10
Littelfuse
Littlefuse Flsr 2 ID Class RK-5 600 VAC SLO BLO
Littlefuse Flsr 2 ID Class RK-5 600 VAC SLO BLO Fuse (Lot of 10)
Only 2 lots left
Free shippingShips next business day
$139.00 / lot of 10
Littelfuse
Littlefuse Flsr 6/10 Class RK-5 600 VAC SLO BLO
Littlefuse Flsr 6/10 Class RK-5 600 VAC SLO BLO Fuse (Lot of 10)
In stock
Free shippingShips next business day
$133.95 / lot of 10
Littelfuse
Littlefuse Flnr 1/4 Class RK-5 250VAC SLO BLO Fu
Littlefuse Flnr 1/4 Class RK-5 250VAC SLO BLO Fuse (Lot of 10)
Only 1 lot left
Free shippingShips next business day
$34.95 / lot of 10
Littelfuse
Littlefuse Flnr 2 Class RK-5 250VAC SLO BLO Fuse
Littlefuse Flnr 2 Class RK-5 250VAC SLO BLO Fuse (Lot of 8)
Only 1 lot left
Free shippingShips next business day
$24.95 / lot of 8
Littelfuse
Littlefuse Flnr 2 Class RK-5 250VAC SLO BLO Fuse
Littlefuse Flnr 2 Class RK-5 250VAC SLO BLO Fuse (Lot of 10)
Only 1 lot left
Free shippingShips next business day
$34.95 / lot of 10
Littelfuse
FRS-R-1/4
Littelfuse FRS-R-1/4 Class RK5 Time Delay Fuse 0.25A 600VAC 10/ORDER
Only 1 left
Free shippingShips next business day
$39.99
Littelfuse
FLSR005ID
Littlefuse FLSR005ID Class RK-5 600 VAC SLO BLO Fuse (Lot of 11)
Only 1 lot left
Free shippingShips next business day
$91.95 / lot of 11
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Guides for Circuit Breakers, Fuses & Protection
- Circuit protectionMolded Case Circuit Breaker Ratings & ReplacementsFrame size, trip rating, interrupting rating (kA), voltage and slash ratings, trip units and mounting – and a checklist for a safe replacement.
- Parts identificationHow to Read Breaker & VFD Nameplates and Date CodesFrame, trip and interrupting ratings on breakers; input, output, duty ratings and series on drives – and where to look for the date of manufacture.