1E2UM Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The 1E2UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 2A at 277V AC / 42V DC with lever actuation and DIN Rail mounting. This component is classified as Active product status with full CSA and UL508 approval. Substitute parts are identified when identical electrical and mechanical parameters are maintained across the same product series, ensuring direct functional interchangeability without design modification.

Substiute Parts

1E2UM

Altech CorporationIn Stock: 12251E2UM Datasheet

Current PartRFQ

1G2UM

Altech CorporationIn Stock: 8061G2UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1E2UM is determined by strict equivalence across the following critical parameters:

• Current Rating: 2A
• Voltage Rating (AC): 277V
• Voltage Rating (DC): 42V
• Breaker Type: Thermal Magnetic
• Mounting Type: DIN Rail
• Actuator Type: Lever
• Number of Poles: 1
• Series: V-EA
• Approval Agencies: CSA, UL508

The 1G2UM meets all substitution criteria, maintaining identical electrical specifications and mechanical form factor within the V-EA series.

Parameter Comparison

Engineering Selection Recommendations

Both the 1E2UM and 1G2UM are Active status products with identical regulatory compliance (CSA, UL508) and environmental certifications (ROHS3 Compliant). Selection between these parts is based on availability and supply chain considerations. Both components satisfy the same electrical and mechanical requirements for 2A thermal magnetic circuit protection at 277V AC / 42V DC with DIN Rail mounting.

Frequently Asked Questions (FAQ)

Q: Can the 1G2UM directly replace the 1E2UM in an existing installation?

A: Yes. The 1G2UM is a parametric equivalent with identical current rating, voltage specifications, breaker type, mounting configuration, and regulatory approvals. No circuit modification is required.

Q: What distinguishes the 1E2UM from the 1G2UM?

A: Both parts share identical electrical and mechanical specifications within the V-EA series. The designation difference (E vs. G character) reflects internal Altech Corporation product line classification but does not affect functional performance or compatibility.

Q: Are both parts currently available?

A: Both 1E2UM and 1G2UM maintain Active product status. Inventory availability should be verified through current supply chain data.

Q: Do these parts require different DIN Rail mounting procedures?

A: No. Both components use identical DIN Rail mounting specifications and lever actuation mechanisms.

Q: Are there any compliance differences between these substitutes?

A: No. Both parts carry identical CSA and UL508 approvals and maintain ROHS3 compliance status.