Mersen
TRS10R
Ferraz Shawmut TRS10R Tri-Onic 10A 600VAC/300VDC RK1 Fuse LOT OF 2
Only 1 lot left
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$10.50 / lot of 2
Circuit Breakers, Fuses & Protection
3,524 listings · 3,464 in stock
3,524 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 & Accessories829 in stock
- Miniature & DIN Rail Circuit Breakers308 in stock
- Fuse Holders & Fuse Blocks254 in stock
- Disconnect & Safety Switches207 in stock
- Molded Case Circuit Breakers132 in stock
- Surge Protection & Ground Fault129 in stock
- Protective & Monitoring Relays30 in stock
Mersen
TRS35R
Ferraz Shawmut TRS35R Tri-Onic 35A 600VAC/300VDC RK1 Fuse LOT OF 2
Only 1 lot left
Free shippingShips next business day
$10.50 / lot of 2
Fusetron
FRS-R-10
Fusetron FRS-R-10 10A 600VAC RK5 Class Dual Element Time Delay Fuse LOT OF 6
Only 1 lot left
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$59.99 / lot of 6
Mersen
TRS60UR
Gould Shawmut TRS60UR 60A 600VAC RK1 Class Tri-Onic Time Delay Fuse
In stock
Free shippingShips next business day
$10.50
Siemens
JN-322
Siemens I-T-E JN-322 Type 1 Enclosed Disconnect Switch 60A 240VAC/250VDC
Only 1 left
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$34.99
Cutler-Hammer
KPEK1
Eaton / Cutler-Hammer KPEK1 3-Pole F-Frame Breaker End-Cap Kit Accessory
Only 1 left
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$16.00
Square D
QOB230
Square D QOB230 2-Pole 30A 240VAC Bolt-On Breaker Replacement QOB Series
Only 1 left
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$12.00
Square D
QOB230
Square D QOB230 Shunt Trip Circuit Breaker
Only 1 left
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$139.99
General Electric
THQLRK1
General Electric THQLRK1 Main Breaker Retainer for PowerMark Gold 150–225 A
Only 1 left
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$14.00
Eaton
GHB3050
Eaton-Westinghouse GHB3050 50 A 3-Pole Bolt-On Molded Case Breaker, 480 VAC
Only 1 left
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$144.99
Square D
Square D 4020513001K Cover Trim Screw Kit 1/2” Q
Square D 4020513001K Cover Trim Screw Kit 1/2” QO/Homeline BAG OF 10
In stock
Free shippingShips next business day
$12.00 / lot of 10
Allen-Bradley
440E-L13175
Allen-Bradley 440E-L13175 Guardmaster Lifeline 4 Cable Pull Safety Switch
Only 1 left
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$199.99
Eaton
FD1040
Eaton FD1040 1-Pole 40A 277VAC Industrial Circuit Breaker 40°C LOT OF 8
Only 1 lot left
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$389.99 / lot of 8
Sprecher + Schuh
KTU7-D-2D-12AB
Sprecher+Schuh KTU7-D-2D-12AB Circuit Breaker Terminal Block OEM Part
Only 3 left
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$109.99
Sprecher + Schuh
LFS2-G-6-175
Sprecher+Schuh LFS2-G-6-175 Ser A Circuit Breaker / Fuse Holder OEM
Only 1 left
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$19.99
Sprecher + Schuh
Sprecher+Schuh L8-3/2/C Ser B Circuit Breaker 2A
Sprecher+Schuh L8-3/2/C Ser B Circuit Breaker 2A 3 Pole Industrial OEM
Only 4 left
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$59.99
Cutler-Hammer
FS340015AL-NS
Eaton Cutler-Hammer FS340015AL-NS Circuit Breaker 15A 600V OEM
Only 1 left
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$159.99
General Electric
TED126100WL
GE TED126100WL Circuit Breaker 100A 2 Pole 600VAC Industrial OEM
Only 1 left
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$174.99
Sprecher + Schuh
480Y/277V
Sprecher+Schuh L9-20/3/C 3-Pole C-Curve Circuit Breaker 20A 480Y/277V
In stock
Free shippingShips next business day
$334.99
Schneider Electric
GV2-P01
Schneider Electric GV2-P01 0.1-0.16A
Only 4 left
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$23.00
Eaton
FAZ-C25/2-NA
Eaton FAZ-C25/2-NA Miniature Circuit Breaker
In stock
Free shippingShips next business day
$27.00
Stego
01147.9-00
Stego KTS 011 01147.9-00 AC120V 15(2)A AC250V 10(2)A
Only 2 left
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$19.00
Fusetron
FRS-R-1
Fusetron FRS-R-1 Fuse 1A 600V Dual Element Time-Delay Class RK5 Fuse
Only 1 left
Free shippingShips next business day
$10.50
Bussmann
FNQ-15/100
Cooper Bussmann FNQ-15/100 Fuse 0.15A 600V Tron Time-Delay Midget Fuse
Only 1 left
Free shippingShips next business day
$10.50
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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.