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E42B020 - 20Amp Circuit Breaker

  • 20 Amp
  • 18k @ 480VAC; 25k @ 240VAC
  • 2 Pole
Circuit BreakersSKU: E42B020 [R]

Purchase Options: Refurbished

E42B020 - 20Amp Circuit Breaker Description

E42B020 - 20Amp Circuit Breaker

The E42B020 is a 20 Amp, 2-pole molded case circuit breaker designed for use in compatible commercial and industrial electrical distribution systems. Built as a bolt-on breaker, it provides dependable circuit protection against overloads and short circuits while maintaining the original form, fit, and function required in existing equipment. Whether you're performing routine maintenance, replacing a failed breaker, or servicing legacy electrical infrastructure, the E42B020 offers the ratings and configuration needed to help keep systems operating as intended.

Rated for 25kA at 240VAC and 18kA at 480VAC, this Type E42 circuit breaker is suitable for applications requiring a compact two-pole protective device with established interrupting capacity. Its HACR rating makes it appropriate for use in compatible heating, ventilation, air conditioning, and refrigeration systems where specified. The breaker includes load-side terminals to simplify installation and is designed for operation in environments up to 40°C (104°F). Built to last, the E42B020 remains a practical solution for maintaining electrical systems that rely on this specific breaker configuration.

Key Features and Benefits

  • 20 Amp current rating for branch circuit protection
  • Two-pole design for applications requiring protection across multiple conductors
  • Bolt-on mounting configuration for secure installation
  • Molded case construction for commercial and industrial environments
  • Interrupting capacity rated at 25kA at 240VAC
  • Interrupting capacity rated at 18kA at 480VAC
  • HACR rated for compatible HVAC and refrigeration applications
  • Includes load-side terminals
  • Designed for operation in ambient temperatures up to 40°C (104°F)
  • Suitable as a form, fit, and functional replacement in compatible equipment
  • Compact footprint for installations with limited panel space
  • Built to last in demanding electrical environments

Technical Specifications

  • Part Number: E42B020
  • Type: E42
  • Product Type: Molded Case Circuit Breaker
  • Mounting Style: Bolt-On
  • Amperage: 20 Amps
  • Poles: 2
  • Voltage Ratings: 240VAC / 480VAC
  • Interrupting Capacity (A.I.C.): 25kA @ 240VAC; 18kA @ 480VAC
  • Temperature Rating: 40°C (104°F)
  • HACR Rated: Yes
  • Included: Load-side terminals
  • Dimensions: 2.0"W x 6.35"H x 3.92"D
  • Approximate Shipping Weight: 4.31 lbs.

Material Compliance and Certifications

  • The E42B020 is a HACR-rated molded case circuit breaker intended for use in compatible electrical distribution equipment and HVAC-related applications where such ratings are specified.
  • Installation and application should be performed by qualified electrical personnel and in accordance with all applicable local, state, and national electrical codes, as well as equipment manufacturer requirements.

Where It Works Best

The E42B020 is commonly used in commercial facilities, industrial plants, manufacturing environments, HVAC systems, refrigeration equipment, electrical distribution panels, and other installations requiring a 20 Amp 2-pole circuit breaker with matching voltage and interrupting ratings. It is particularly well suited for maintenance and replacement projects where preserving the original electrical design and protection characteristics of existing equipment is important.


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.

Siemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are NOT supplied by Siemens AG or its affiliates.

Specifications

  • Width:2.0
  • Height:6.35
  • Depth:3.92
  • Poles:2
  • Amperes:20
  • A.I.C. Rating & Volts:18k @ 480VAC; 25k @ 240VAC
  • Type:E42
  • Approx Dimensions:2.00"W x 6.35"L x 3.92"D
  • Additional Notes:40°C, HACR rated, Molded Case Circuit Breaker. Bolt-On. Includes load-side terminals.

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

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