1G2UM Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The 1G2UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, designed for DIN rail mounting applications. This single-pole breaker is rated for 2A at 277V AC and 42V DC, featuring lever actuation and meeting CSA and UL508 approval standards. The product is currently active in production with 735 units in stock. Equivalent substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

1G2UM

Altech CorporationIn Stock: 8061G2UM Datasheet

Current PartRFQ

1E2UM

Altech CorporationIn Stock: 12251E2UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 1E2UM is identified as a parametric equivalent to the 1G2UM based on identical electrical and mechanical specifications. Substitution eligibility is determined by the following critical parameters:

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

Both parts belong to the same V-EA series and share identical electrical performance characteristics, mechanical form factor, and regulatory certifications. The difference in part number designation reflects internal manufacturer coding but does not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the 1G2UM and 1E2UM are active production parts from Altech Corporation with identical electrical ratings, mechanical specifications, and regulatory certifications. Selection between these parts may be based on inventory availability and procurement lead times. The 1E2UM currently has higher stock levels (1163 units versus 735 units), which may provide supply chain advantages. Both parts maintain ROHS3 compliance and CSA/UL508 certifications, ensuring regulatory equivalence for applications requiring these approvals.

Frequently Asked Questions (FAQ)

Q: Can the 1E2UM be used as a direct replacement for the 1G2UM?

A: Yes. Both parts share identical electrical ratings (2A, 277V AC, 42V DC), breaker type (thermal magnetic), mounting configuration (DIN rail), and regulatory certifications (CSA, UL508). They are functionally equivalent for all applications.

Q: What determines whether these parts are substitutable?

A: Substitution is based on matching current rating, voltage ratings (AC and DC), breaker type, mounting type, actuator type, number of poles, and approval certifications. The 1G2UM and 1E2UM are identical across all these parameters.

Q: Are there any differences in packaging or form factor?

A: No. Both parts are packaged in bulk and designed for DIN rail mounting with identical mechanical specifications.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the 1G2UM and 1E2UM carry CSA and UL508 approvals and are ROHS3 compliant.

Q: Which part should I select if both are available?

A: Selection may be based on inventory availability and procurement timelines. The 1E2UM has higher current stock levels, which may reduce lead times for urgent requirements.