Circuit Protection

Filter  
  1. Common Amperage 4Amp Remove This Item
  2. Common Amperage 40Amp Remove This Item
Clear All
Category  
Capacitance  
Common Voltage  
VAC  
Common Amperage  
Fuse Package  
DC Voltage  
Manufacturer  
Amperage  
Unit of Measure  
Price  
View as List Grid

Items 1-24 of 32

Page
per page
Set Descending Direction
  1. TE Connectivity  Potter & Brumfield - W23-X1A1G-40 - Circuit Breaker. Thermal Push/Pull 40 Amp. 240VAC, 50VDC Panel Mount
    TE Connectivity Potter & Brumfield - W23-X1A1G-40 - Circuit Breaker. Thermal Push/Pull 40 Amp. 240VAC, 50VDC Panel Mount
    Special Price $18.98 Regular Price $24.50 As low as $14.98
    READY TO SHIP - ONLY 62 LEFT IN STOCK!

    TE Connectivity / Potter & Brumfield - W23-X1A1G-40 Circuit Breaker.

    W23 Series - Single Pole

    Thermal Push/Pull 40 Amp 250VAC

    Voltage: 50VDC Max.

    Mount: Panel Mount

    UL, CSA Approved

    Dimensions: See Attached Diagram

    New Old Stock

    Proudly Made in USA

    Learn More
  2. AIRPAX - UPG6-1-62-402-C-91 - Circuit Breaker, Magnetic 1 Pole, 4 Amp 277VAC.
    AIRPAX - UPG6-1-62-402-C-91 - Circuit Breaker, Magnetic 1 Pole, 4 Amp 277VAC.
    Special Price $9.98 Regular Price $12.50

    AIRPAX - UPG6-1-62-402-C-91 Circuit Breaker.

    Magnetic 1 Pole

    4 Amp 277VAC, 50/60Hz.

    Delay Trip 5 Amp.

    Learn More
  3. TI - Sensata - KLIXON - 51MC1-25-4 - Circuit Breaker, 4 Amp,  50VDC.
    TI - Sensata - KLIXON - 51MC1-25-4 - Circuit Breaker, 4 Amp, 50VDC.
    Special Price $8.98 Regular Price $14.98
    READY TO SHIP - ONLY 31 LEFT IN STOCK!

    Texas Instrument - Sensata - KLIXON - 51MC1-25-4 - Circuit Breaker.

    4 Amp,

    50VDC.

    "M3A"-CURVE 25.

    Learn More
  4. TE Connectivity RAYCHEM - RXE010 - Fuse. Polyswitch. 60V max. 40Amp max.
    TE Connectivity RAYCHEM - RXE010 - Fuse. Polyswitch. 60V max. 40Amp max.
    Special Price $0.79 Regular Price $0.98 As low as $0.59

    TE Connectivity RAYCHEM - RXE010 - Fuse. Polyswitch.

    60V max.

    40Amp max.

    urrent hold: 100mA.

    Current trip: 200mA.

    Trip time: 4s.

    Package: Radial Leads.

    Learn More
  5. TE Connectivity Potter & Brumfield - W93X11-10-40 - 3-Pole 40Amp 277VAC Circuit Breakers
    TE Connectivity Potter & Brumfield - W93X11-10-40 - 3-Pole 40Amp 277VAC Circuit Breakers
    Special Price $64.98 Regular Price $80.00 As low as $59.98

    TE Connectivity Potter & Brumfield - W93X11-10-40

    Breaker Type: Magnetic (Hydraulic Delay)

    Number of Poles: 3

    Current Rating: 40 Amp

    Operating Temperature: -40 °C to 85 °C

    Termination: Stud

    Voltage Rating (AC): 277 V

     Mount: Panel

    Color: Black

    Circuit Breakers Curve 10 50/60CY

    New

    NSN: 1710014769724

    Learn More
  6. AIRPAX - IMLK1-1RLS4-52-40.0-01 - Circuit breaker. SP 40Amp 80VDC.
    AIRPAX - IMLK1-1RLS4-52-40.0-01 - Circuit breaker. SP 40Amp 80VDC.
    $26.99
    Circuit breaker. SP 40Amp 80VDC. Toggle. Hertz: DC. Delay: 52. Trip amps: 50. Aux switch: 1Amp 65VDC. Mount: panel, 2 holes at 2.0" centers. Dimensions: 0.745" wide x 2.51" high. Learn More
  7. Square D - QOB340 - Circuit breaker. 3P 40Amp 240VAC. Type: QOB.
    Square D - QOB340 - Circuit breaker. 3P 40Amp 240VAC. Type: QOB.
    Special Price $41.95 Regular Price $75.00
    Circuit breaker. 3P 40Amp 240VAC. Type: QOB, 3 Phase. Bolt on. New. Learn More
  8. Square D - Q0B240UH - 40AMP DP SQUARE D BREAKER
    Square D - Q0B240UH - 40AMP DP SQUARE D BREAKER
    $30.00
    40AMP DOUBLE POLE WITH ONE SWITCH BOLT ON SQUARE D BREAKER SUITABLE FOR AL/CU CONDUCTORS.WITH VISI-TRIP Learn More
  9. SIEMENS - 5SX21-C4 - Circuit breaker. 1P 4Amp 230~400V.
    SIEMENS - 5SX21-C4 - Circuit breaker. 1P 4Amp 230~400V.
    $9.95
    Circuit breaker. 1P 4Amp 230~400V. Mount: panel. Only 0.7" wide x 3.55"tall x 2". Note: Listed UL/CSA/CEBC/OVE, Circled "N", VDE. Learn More
  10. CUTLER-HAMMER - SPMH1HM0004 - Circuit breaker. 1P 4 Amp 277/480VAC.
    CUTLER-HAMMER - SPMH1HM0004 - Circuit breaker. 1P 4 Amp 277/480VAC.
    $24.99
    Circuit breaker. 1P 4 Amp 277/480VAC. Mount: din rail. Actuator: toggle. 8X Inrush - Medium delay. Note: UL 1077 Supplementary protector. Learn More
  11. Cutler-Hammer / Eaton - HFD3040 -  Thermal Magnetic Circuit Breaker, 3 Pole, 40A, 600VAC
    Cutler-Hammer / Eaton - HFD3040 - Thermal Magnetic Circuit Breaker, 3 Pole, 40A, 600VAC
    Special Price $389.98 Regular Price $600.00
    READY TO SHIP - ONLY 1 LEFT IN STOCK!

    Cutler-Hammer / Eaton - HFD3040 - Thermal Magnetic Circuit Breaker, 3 Pole, 40A, 65kA

    HFD3040, Molded case, thermal magnetic, F frame Circuit Breaker, 600 VAC at 50/60 Hz, 250 VDC, 40 ampere at 40 Deg c, 3 pole, interrupting rating 100 kiloampere at 240 vac, 65 kiloampere at 480 vac, 25 kiloampere at 600 vac, 22 kiloampere at 250 VDC (ul), 100 kiloampere at 220/240 VAC, 65 kiloampere at 380/415/440 vac, 25 kiloampere at 500 VAC, 22 kiloampere at 250 VDC (IEC), terminal standard pressure line terminal, standard pressure load terminal, size 4.125 inch w x 3.375 inch d x 6 inch h, approval Underwriters Laboratories, HFD model, applicable standard IEC 157-1. Suitable for 2 Pole applications, use outside poles (single phase). 

    New in Factory packaging with instructions.

    Learn More
  12. AIRPAX - IELH1111-1-62-40.0-10V - Circuit breaker. 4P 40Amp 250VAC.
    AIRPAX - IELH1111-1-62-40.0-10V - Circuit breaker. 4P 40Amp 250VAC.
    $77.00
    Circuit breaker. 4P 40Amp 250VAC 50/60Hz. TA 50Amp. Delay 62. Mount: Panel. Dimensions: 2.972" wide x 2.510" high x 1.876" deep, plus screw terminals. Has 4 hole mount at 3" centers. New Learn More
  13. Siemens - ED43B040 - Circuit breaker. 3P 40Amp 480VAC.
    Siemens - ED43B040 - Circuit breaker. 3P 40Amp 480VAC.
    $50.00
    Circuit breaker. 3P 40Amp 480VAC. Type ED4. Dimensions: 3" wide x 6.35" high x 4.56" deep. Sentron. Note: Used/Removed from equipment. Learn More
  14. Littelfuse - R251004 - Fuse, pico. 4Amp 125V.
    Littelfuse - R251004 - Fuse, pico. 4Amp 125V.
    $1.00
    Fuse, pico. 4Amp 125V. Case: axial leads. New. Learn More
  15. LITTELFUSE - 313004 - Fuse. 4Amp 125V 3AG. Slo-blow. Package of 5.
    LITTELFUSE - 313004 - Fuse. 4Amp 125V 3AG. Slo-blow. Package of 5.
    Special Price $3.98 Regular Price $5.00
    Fuse. 4Amp 125V 3AG. Slo-blow. Dimensions: 0.25" (6.35mm) D x 1.25" (31.75mm) long. Package of 5. Learn More
  16. LITTELFUSE - 312004 - Fuse. 4Amp 250V 3AG. (P5).
    LITTELFUSE - 312004 - Fuse. 4Amp 250V 3AG. (P5).
    Special Price $3.98 Regular Price $5.00
    Fuse. 4Amp 250V 3AG. Dimensions: 0.25" (6.35mm) D x 1.25" (31.75mm) long. Package of 5. Learn More
  17. Cooper/Bussmann - LPJ4SP - Fuse. 4Amp 600VAC.
    Cooper/Bussmann - LPJ4SP - Fuse. 4Amp 600VAC.
    $10.00
    Fuse. 4Amp 600VAC. Dual time, delay element, current limiting. Class J. Learn More
  18. Cooper/Bussmann - NOS4 - Fuse. 4Amp 600VAC.
    Cooper/Bussmann - NOS4 - Fuse. 4Amp 600VAC.
    $15.00
    Fuse. 4Amp 600VAC. One Time. Dimensions: 0.816" D x 5" long. Learn More
  19. BUSSMANN - FRS-R4 - Fuse. 600V 4Amp. Dual-element time-delay.
    BUSSMANN - FRS-R4 - Fuse. 600V 4Amp. Dual-element time-delay.
    $14.95
    Fuse. 600V 4Amp. Dual-element time-delay. Current limiting Class-RK5. CSA HRC-1-R. 200,000Amp rms. Dimensions: 0.82" D x 5" long. Learn More
  20. BEL FUSE - 483525397095 - Fuse. 4Amp 125VAC. Glass.
    BEL FUSE - 483525397095 - Fuse. 4Amp 125VAC. Glass.
    Special Price $1.69 Regular Price $1.95
    READY TO SHIP - ONLY 7 LEFT IN STOCK!

    BEL FUSE - 483525397095 Fuse.

    4Amp 125VAC.

    Glass. Mount: PCB with clips.

    Dimensions: 1/4" D x 13/16".

    Note: Replacement part for Magnavox, Philco, Sylvania and Philips.

    Learn More
  21. Gould (Brush) - XL70F40 - Fuse. 40Amp 700VAC.
    Gould (Brush) - XL70F40 - Fuse. 40Amp 700VAC.
    $50.00
    Fuse. 40Amp 700VAC. Type XL semiconductor fuse. Note: Tested good 2/24/15. Learn More
  22. Eagle - 655 - Fuse. 250VAC 40Amp. Used.
    Eagle - 655 - Fuse. 250VAC 40Amp. Used.
    $4.00
    Fuse. 250VAC 40Amp. Class M, IR 10KA. Dimensions: 0.814" D x 3" long. Note: Used/Removed from equipment. Learn More
  23. BUSSMANN - FWP-40B - FUSE RECT. 40A 700VAC
    BUSSMANN - FWP-40B - FUSE RECT. 40A 700VAC
    Special Price $99.95 Regular Price $165.00
    40A 700VAC RECTIFIER FUSE MANFR.BX Learn More
  24. LITTELFUSE - AGX-4 - Fuse. 4Amp 32V. Package of 5.
    LITTELFUSE - AGX-4 - Fuse. 4Amp 32V. Package of 5.
    $3.00
    Fuse. 4Amp 32V. Fast acting. Type 8AG. Package: glass, 0.25" D x 1.0" long. Package of 5 Learn More
View as List Grid

Items 1-24 of 32

Page
per page
Set Descending Direction
What's this? Check "Remember Me" to access your shopping cart on this computer even if you are not signed in.