Square D
N-237
Square D Circuit Breaker N-237 Q2L3225H 240VAC
Only 1 left
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$30.00
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
General Electric
TJJ436400
General Electric TJJ436400 MOD.5
Only 1 left
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$539.99
Industrial part
JCL15
New Fuse Reliance JCL15 (Lot of 5)
Only 1 lot left
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$34.99 / lot of 5
Industrial part
5SA161
New Fuse Original Diazed 5SA161 Each (Lot of 8)
Only 2 lots left
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$17.00 / lot of 8
Industrial part
A4J35
New Fuse Amptrap A4J35 Each (Lot of 3)
Only 1 lot left
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$33.00 / lot of 3
Industrial part
AJT20
New Fuse APM-Trap AJT20 Each
In stock
Free shippingShips next business day
$14.00
Bussmann
FRN-R-8
New Fuse Buss FRN-R-8 (Lot of 4)
Only 4 lots left
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$17.00 / lot of 4
Bussmann
FRN-R-10
New Fuse Buss FRN-R-10 (Lot of 3)
Only 2 lots left
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$22.00 / lot of 3
Fusetron
Use Fused Fusetron FRN-R150 (Lot 0F 3)
Use Fused Fusetron FRN-R150 (Lot 0F 3)
Only 2 left
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$26.00
Gould
TRS100R
Used Fuse Gould TRS100R (Lot of 3)
Only 3 lots left
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$39.00 / lot of 3
Mersen
New Fuse Ferraz Shawmut TRS 125R Each
New Fuse Ferraz Shawmut TRS 125R Each
Only 3 left
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$19.00
Mersen
TRS70R
Used Fuse Ferraz Shawmut Tritonic TRS70R (Lot of 3)
Only 1 lot left
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$20.00 / lot of 3
Cutler-Hammer
21-A161KD1
Cutler-Hammer 21-A161KD1 Circuit Breaker Accessories PRL4a Circuit Breaker Mount
Only 1 left
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$609.00
Mersen
GAB12
New Fuse Mersen Fast Acting Fuse GAB12 12A 250V Each
Only 2 left
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$20.00
Siemens
QJ22-QJ23-Q.JH
Siemens/ITE 225 Amp QJ22-QJ23-Q.JH FC1 Twin 21-B143QJ6
Only 1 left
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$309.00
Mersen
GAB12 5/PK
Mersen Fast Acting Fuse GAB12 5/PK
Only 2 lots left
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$14.00 / lot of 5
Gould
Gould RF 30 Fuse
Gould RF 30 Fuse
Only 1 left
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$10.00
Mersen
GDL5
New Fuse Mersen Fast Acting Fuse GDL5 5A 250V (Lot OF2)
Only 1 lot left
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$12.00 / lot of 2
Cutler-Hammer
PRL-4
Cutler Hammer/Westinghouse 400 Amp KD-HKD-KDC PRL-4 Twin 21-A161KD4
Only 1 left
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$309.00
Mersen
RFS80
New Fuse Ferraz Shawmut RFS80 80AMPS 600V Each
Only 5 left
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$20.00
Mersen
New Fuse Mersen Shawmut RLS 45 Renewal Fuse Link
New Fuse Mersen Shawmut RLS 45 Renewal Fuse Link (1 Lot of 8)
Only 1 lot left
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$6.99 / lot of 8
Mersen
RFS2
New Fuse Mersen Ferraz RFS2 2AMP
In stock
Free shippingShips next business day
$60.00
Mersen
RFS35
NEW FUSE Mersen Ferraz Shawmut RFS35 Tri-Onic Time Delay Fuses 35 Amp 600v
In stock
Free shippingShips next business day
$30.00
Mersen
RFS50
New Fuse Gould Shawmut RFS50 50AMP 600V Each
In stock
Free shippingShips next business day
$25.00
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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.