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** Picture is for identification purposes only and may not represent the actual amperage of the product listed **

HEF437040 - 40Amp Circuit Breaker

  • 40 Amp
  • 18k @ 600VAC; 25k @ 480VAC; 65k @ 240VAC
  • 3 Pole
Circuit BreakersSKU: HEF437040

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HEF437040 - 40Amp Circuit Breaker Description

HEF437040 - 40Amp Circuit Breaker

The HEF437040 is a 40 Amp, 3-pole molded case circuit breaker built for your electrical distribution systems that require an HEF frame breaker configuration. It provides circuit protection by helping interrupt overload and short-circuit conditions while maintaining the ratings needed for compatible commercial and industrial equipment. With multiple interrupting ratings — 18kA at 600VAC, 25kA at 480VAC, and 65kA at 240VAC — this breaker can be used in applications where these specifications match the existing system requirements.

Key Features and Benefits

  • 40 Amp current rating
  • Three-pole configuration for three-phase systems
  • HEF frame molded case circuit breaker
  • Provides overload and short-circuit protection
  • Designed for compatible commercial and industrial electrical equipment
  • Form, fit, and functional replacement for matching applications
  • Built to last for long-term use in electrical distribution systems

Technical Specifications

  • Part Number: HEF437040
  • Product Type: Molded Case Circuit Breaker
  • Frame Type: HEF
  • Amperage: 40 Amps
  • Poles: 3
  • A.I.C. Rating:
    • 18kA @ 600VAC
    • 25kA @ 480VAC
    • 65kA @ 240VAC
  • Approximate Shipping Weight: 7.50 lbs.

Material Compliance and Certifications

  • Manufactured as a molded case circuit breaker for use in compatible electrical distribution applications
  • Designed to meet applicable equipment requirements based on installation specifications
  • Confirm system compatibility and applicable electrical codes before installation

Where It Works Best

The HEF437040 is commonly used in commercial buildings, industrial facilities, manufacturing environments, and other electrical distribution applications where an HEF frame circuit breaker is specified. It is a good fit for replacement and maintenance work where the original breaker ratings and configuration need to be maintained.


Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.

Specifications

  • Poles:3
  • Amperes:40
  • A.I.C. Rating & Volts:18k @ 600VAC; 25k @ 480VAC; 65k @ 240VAC
  • Type:HEF

Returns are easy

You may return unused items within 30 days of delivery for a full refund.

FREE ground shipping on breaker orders over $100 and all other items with orders over $500.

Shipping charges are Prepaid and Allowed on UPS Ground orders for all other products on orders over $500.00, again only when shipping within the lower 48 continental United States, provided the product(s) can safely ship UPS Ground.

If the product cannot safely ship via UPS Ground, or is too heavy to ship UPS Ground, then the product will be shipped via freightliner at buyer's expense.

CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

Same Day Shipping

We strive to ship out your items within one business day.

In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).

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