Circuit Protection

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  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. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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.

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  8. 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
  9. 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
  10. WICKMANN - 1810250000 - Fuse. 0.25A 250V.
    WICKMANN - 1810250000 - Fuse. 0.25A 250V.
    Special Price $4.98 Regular Price $6.50

    WICKMANN - 1810250000 Fuse.

    0.25Amp (250mA) 250V.

    Miniature, Ceramic.

    Dimensions: 5 x 20mm.

    Package of 10.

    Alternates: NTE Electronics 74-5SC250MA, Littelfuse 0215.250HXP, 0215.250MXP

     

    Learn More
  11. LITTELFUSE - 251.250 - Fuse, pico. 1/4Amp 125VAC. Fast.
    LITTELFUSE - 251.250 - Fuse, pico. 1/4Amp 125VAC. Fast.
    $1.00
    Fuse, pico. 1/4Amp 125VAC. Fast. Package: axial leads. Learn More
  12. LITTELFUSE - 361.250 - Fuse. 1/4Amp 250VAC. Package of 5.
    LITTELFUSE - 361.250 - Fuse. 1/4Amp 250VAC. Package of 5.
    Special Price $3.98 Regular Price $5.00
    READY TO SHIP - ONLY 14 LEFT IN STOCK!

    LITTELFUSE - 361.250 Fuse.

    1/4Amp 250VAC 8AG.

    Fuse acting.

    Dimensions: 1/4" D x 1" long, glass.

    Package of 5.

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  13. LITTELFUSE - 312.250 - Fuse. 1/4Amp 250V. Package of 5.
    LITTELFUSE - 312.250 - Fuse. 1/4Amp 250V. Package of 5.
    Special Price $3.98 Regular Price $5.00
    Fuse. 1/4Amp 250V 3AG. Dimensions: 0.25" (6.35mm) D x 1.25" (31.75mm) long. Package of 5. Learn More
  14. LITTELFUSE - 215.500 - Fuse. 0.25Amp 250V. Slo-blo. Package of 10.
    LITTELFUSE - 215.500 - Fuse. 0.25Amp 250V. Slo-blo. Package of 10.
    $3.00
    READY TO SHIP - ONLY 47 LEFT IN STOCK!

    Fuse. 0.25Amp 250V. Slo-blo. Mini, ceramic. Dimensions: 5 x 20mm. Package of 10. Note: Alt P/N: 0215.500HXP.

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  15. LITTELFUSE - PT-365 - 0279.400V - Fuse, 0.4 Amp Micro
    LITTELFUSE - PT-365 - 0279.400V - Fuse, 0.4 Amp Micro
    Special Price $8.98 Regular Price $10.50 As low as $7.98

    LITTELFUSE - PT-365 Fuse - 0279.400V - Fuse, 0.4 Amp Micro

    Developed originally for the U.S. Space Program, MICRO fuse provides reliability in a compact design. The MICRO fuse is available in plug in or radial lead styles and a complete range of ampere ratings from 1/500 to 5 amperes to suit a wide variety of design needs.

    279 Series 

    4/10 Amp Micro

    Very Fast Acting

    Dimensions: 0.25" Diamter X 0.35 Long Body X 1.0" Leads (6.35mm X 8.89mm X 25.4mm) 

    Learn More
  16. LITTELFUSE - 276.250 - Fuse, pico. 1/4A 125V. Subminiature, Very Fast acting.
    LITTELFUSE - 276.250 - Fuse, pico. 1/4A 125V. Subminiature, Very Fast acting.
    Special Price $2.98 Regular Price $4.00 As low as $1.98

    LITTELFUSE - 276.250 Fuse, Pico. Subminiature, Very Fast Acting.

    Status: Discontinued

    One quarter (1/4A) amp 125V.

    Very Fast Acting.

    2.8 x 7.11 mm

    -55 C to 125 C

    PCB Mount

    Package: Axial, formed into radial leads.

    More info: http://www.littelfuse.com/data/en/Data_Sheets/275_276.pdf

    Learn More
  17. 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
  18. 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
  19. 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
  20. Cooper/Bussmann - MDM-1/4 - Fuse. 1/4Amp 250V. Slo-Blo, Package of 5.
    Cooper/Bussmann - MDM-1/4 - Fuse. 1/4Amp 250V. Slo-Blo, Package of 5.
    Special Price $9.98 Regular Price $12.50
    READY TO SHIP - ONLY 2 LEFT IN STOCK!

    Cooper/Bussmann - MDM-1/4 - Fuse. 1/4Amp 250V. Slo-Blo, Package of 5.

    These fuses avoid needless blows from starting currents or surges. They have a fuse link which operates only on very high overloads or short‑circuits‑they have a thermal cutout Which functions on low overloads‑ the thermal cutout cannot operate quickly at any load, hence long time‑lag is obtained. Yet protection is afforded against short‑circuits or continued overloads.

    1/4 Amp 250V.

    Time delay Slo-Blo.

    Glass tube.

    Fuse Type: Time Delay / Slow Blow          

    Fuse Size / Group: 7.14 mm x 31.75 mm (0.28" DIameter x 1.25" Long")

    Voltage Rating AC: 250 VAC         

    Mounting Style: Holder / Clip     

    Termination Style: Clip   

    Body Style: Cylindrical    

    Brand:   Bussmann / Eaton           

    Product Type: Time Delay Glass Tube Fuse

    Package of 5.

    Alternate: 413, Mouser  504-MDM-1/4

     

    Learn More
  21. Cooper/Bussmann - FRN-1/4 - Fuse. 1/4Amp 250VAC.
    Cooper/Bussmann - FRN-1/4 - Fuse. 1/4Amp 250VAC.
    Special Price $8.98 Regular Price $12.50
    Fuse. 1/4Amp 250VAC. Semiconductor fuse, dual element, time delay. Class K5. Dimensions: 0.56" D x 2.00" long. Learn More
  22. Cooper/Bussmann - AGX-1/4 - Fuse. 1/4Amp 125V. Package of 5.
    Cooper/Bussmann - AGX-1/4 - Fuse. 1/4Amp 125V. Package of 5.
    $3.50
    Fuse. 1/4Amp 125V. Fast acting. Type 8AG. Package: glass, 0.25" D x 1.0" long. Package of 5. Learn More
  23. Cooper/Bussmann - AGS/4AG-1/4 - Fuse. 1/4Amp 250V. Package of 5.
    Cooper/Bussmann - AGS/4AG-1/4 - Fuse. 1/4Amp 250V. Package of 5.
    Special Price $14.98 Regular Price $18.50
    READY TO SHIP - ONLY 13 LEFT IN STOCK!

    Cooper/Bussmann - AGS/4AG-1/4 - Fuse.

    Hard to find 9/32" OD 4AG/ABS/AGS Series - Buss and Littelfuse Fuses Hard to find 9/32" OD 4AG/ABS/AGS/MDC/MDM Series Especially designed to withstand vibration, shock, fatigue and repeated off and on circuit operating conditions. The 4AG series fuses are commonly specified in older aircraft. About 30 years ago Buss superseded them to the now obsolete AGS series fuse. Even this newer series is now leaving many aircraft owners struggling to find replacements. The AGS & 4AG fuses are now being replaced by ceramic ABS series of fuses that have the same electrical and thermal performance.

    1/4Amp 250V.

    Glass tube.

    Dimensions: 9/32" D x 1-1/4" Long.

    Package of 5.

    Note: Formerly 4AG.

    Learn More
  24. TE Connectivity TYCO - RXEF090 - Fuse, resettable. 40Amp 72VDC.
    TE Connectivity TYCO - RXEF090 - Fuse, resettable. 40Amp 72VDC.

    TE Connectivity TYCO - RXEF090 Fuse, Resettable.

    TM Polyswitch, 40Amp max, 0.9Amp hold, 72VDC.

    Epoxy Polymer.

    Package: Radial Leads.

    Lead Free.

    UL, CSA, TUV

    Rohs Compliant.

    Learn More
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