2E40UM 40A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 2E40UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 40A at 480V AC and 60V DC. This DIN rail-mounted breaker with lever actuator is part of the V-EA series and holds active product status with CSA and UL508 approvals. Equivalent substitute parts are identified based on matching electrical ratings, mechanical specifications, and regulatory certifications to ensure direct interchangeability in circuit protection applications.

Substiute Parts

2E40UM

Altech CorporationIn Stock: 9702E40UM Datasheet

Current PartRFQ

2B40UM

Altech CorporationIn Stock: 8452B40UM Datasheet

Parametric EquivalentRFQ

2G40UM

Altech CorporationIn Stock: 11172G40UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 2E40UM has two parametric equivalents within the Altech V-EA series: 2B40UM and 2G40UM. Substitution eligibility is determined by the following critical parameters that must match exactly:

• Current Rating: 40A
• Voltage Rating - AC: 480V
• Voltage Rating - DC: 60V
• Breaker Type: Thermal Magnetic
• Mounting Type: DIN Rail
• Actuator Type: Lever
• Number of Poles: 2
• Approval Agency: CSA, UL508
• Series: V-EA

All three parts meet these criteria identically. The designations (E, B, and G) represent different thermal trip characteristics within the same electrical and mechanical envelope, allowing substitution based on application-specific thermal response requirements.

Parameter Comparison

Engineering Selection Recommendations

All three circuit breaker models—2E40UM, 2B40UM, and 2G40UM—are active products with identical electrical ratings, mechanical specifications, and regulatory certifications. Selection between these parts should be based on thermal trip characteristic requirements specific to the application. Each part maintains ROHS3 compliance and CSA/UL508 approvals, ensuring regulatory conformance across all substitution options. Inventory availability is 915 units for 2E40UM, 735 units for 2B40UM, and 1028 units for 2G40UM.

Frequently Asked Questions (FAQ)

Q: Can 2B40UM or 2G40UM be used as direct replacements for 2E40UM?

A: Yes. All three parts share identical electrical ratings (40A, 480V AC, 60V DC), mechanical specifications (DIN rail mounting, 2-pole lever actuator), and regulatory approvals (CSA, UL508). The letter designation indicates thermal trip characteristic variation within the same product family.

Q: What determines compatibility between these circuit breaker models?

A: Compatibility is determined by matching current rating, voltage ratings (AC and DC), breaker type (thermal magnetic), mounting configuration (DIN rail), actuator type (lever), pole count, and approval certifications. All three models meet these criteria identically.

Q: Are there any packaging or compliance differences between these substitutes?

A: No. All three parts are supplied in bulk packaging, are ROHS3 compliant, and hold identical CSA and UL508 certifications. REACH status is unaffected for all models.

Q: How do the thermal characteristics differ between E, B, and G designations?

A: The designations represent different thermal trip curves within the V-EA series. Selection should be based on the specific thermal response requirement of the application.

Q: What is the current inventory status for these substitute parts?

A: 2E40UM: 915 units; 2B40UM: 735 units; 2G40UM: 1028 units. All are listed as new original stock.