E42B090L - 90Amp Circuit Breaker


- 90 Amp
- 18k @ 480VAC; 25k @ 240VAC
- 2 Pole
Purchase Options: New Surplus
E42B090L - 90Amp Circuit Breaker Description
E42B090L - 90Amp Circuit Breaker
Finding the right replacement circuit breaker can make all the difference when you're maintaining an existing electrical system. The E42B090L is a 90 Amp, 2-pole molded case circuit breaker designed for use in compatible commercial and industrial power distribution equipment where matching the original specifications is critical. Whether you're replacing a failed breaker during a maintenance shutdown or sourcing components for an ongoing facility retrofit, this breaker provides the ratings and configuration needed to help keep electrical systems operating as intended.
Designed for applications operating at 240VAC and 480VAC, the E42B090L features an interrupting capacity of 25kA at 240VAC and 18kA at 480VAC, helping protect circuits and connected equipment from overcurrent conditions. Its 2-pole design allows simultaneous disconnection of both conductors, making it suitable for a wide range of branch and feeder circuit applications found in commercial buildings, manufacturing facilities, and institutional environments.
Key Features and Benefits
- 90 Amp molded case circuit breaker
- Two-pole configuration
- Type E42 design
- Interrupting capacity of 25kA at 240VAC
- Interrupting capacity of 18kA at 480VAC
- HACR rated for applicable HVAC and refrigeration systems
- Includes line-side and load-side terminals
- Suitable for commercial, industrial, and institutional applications
- Helps maintain original equipment form, fit, and function
- Designed for operation in 40°C ambient environments
- Built to last in properly maintained electrical systems
- Suitable for maintenance, repair, and replacement projects
Technical Specifications
-
Part Number: E42B090L
-
Type: E42
-
Product Type: Molded Case Circuit Breaker
-
Amperage Rating: 90 Amps
-
Poles: 2
-
Voltage Rating: 240VAC / 480VAC
-
Interrupting Capacity: 25kA @ 240VAC; 18kA @ 480VAC
-
HACR Rated: Yes
-
Operating Temperature: 40°C
-
Included Terminals: Line-Side and Load-Side Terminals
-
Width: 2.0 in
-
Height: 6.35 in
-
Depth: 3.92 in
-
Dimensions: 2.0"W x 6.35"H x 3.92"D
-
Approximate Shipping Weight: 4.31 lbs
Material Compliance and Certifications
- The E42B090L is a HACR-rated molded case circuit breaker intended for installation in electrical systems that match its ratings and application requirements.
- Installation, inspection, and maintenance should be performed by qualified personnel and in accordance with applicable electrical codes, safety standards, and equipment manufacturer guidelines.
Where It Works Best
- Commercial office buildings
- Industrial facilities and manufacturing plants
- Electrical distribution panels and panelboards
- HVAC and refrigeration equipment requiring HACR-rated protection
- Facility maintenance and retrofit projects
- Branch circuit and feeder circuit protection applications
- Existing electrical systems utilizing compatible E42 series breakers
- Replacement projects where maintaining original form, fit, and function 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:90
- 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. Includes line and load-side terminals.
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE shipping on breaker orders over $100 and all other items with orders over $500.
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).

