3E40UM 40A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 3E40UM is a three-pole thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 40A at 480V AC and 60V DC with lever actuation and DIN rail mounting. This component is classified as Active product status with full compliance to CSA and UL508 approval standards. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the V-EA series, enabling direct replacement in applications requiring identical performance specifications and mounting configurations.

Substiute Parts

3E40UM

Altech CorporationIn Stock: 7873E40UM Datasheet

Current PartRFQ

3B40UM

Altech CorporationIn Stock: 9493B40UM Datasheet

Parametric EquivalentRFQ

3C40UM

Altech CorporationIn Stock: 10253C40UM Datasheet

Parametric EquivalentRFQ

3Z40UM

Altech CorporationIn Stock: 9633Z40UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3E40UM are qualified based on strict equivalence across the following parameters: current rating (40A), voltage ratings (480V AC / 60V DC), breaker type (thermal magnetic), number of poles (3), mounting type (DIN rail), actuator type (lever), series designation (V-EA), and approval certifications. All substitute parts maintain identical electrical performance characteristics and mechanical form factors, ensuring direct interchangeability in circuit protection applications. The substitutes differ only in their trip characteristic designations (B, C, and Z curves), which represent different thermal-magnetic response profiles within the same product family.

Parameter Comparison

Engineering Selection Recommendations

All four circuit breaker models (3E40UM, 3B40UM, 3C40UM, 3Z40UM) are Active products with ROHS3 compliance and maintain identical electrical and mechanical specifications. Selection between these parts depends on the required trip characteristic curve for the specific application. The 3E40UM, 3B40UM, and 3Z40UM carry dual approval from CSA and UL508, while the 3C40UM carries UL508 approval. For applications requiring CSA certification, the 3E40UM, 3B40UM, or 3Z40UM are appropriate selections. All parts are suitable for direct substitution where trip characteristic requirements align with application needs.

Frequently Asked Questions (FAQ)

Q: Can 3B40UM, 3C40UM, and 3Z40UM be used interchangeably with 3E40UM?

A: These parts are electrically and mechanically equivalent with identical current ratings (40A), voltage ratings (480V AC / 60V DC), pole configuration (3-pole), and DIN rail mounting. Interchangeability depends on whether the application specifies a particular trip characteristic curve. If the circuit design does not mandate a specific curve designation, substitution is valid.

Q: What is the difference between the E, B, C, and Z designations?

A: These letters represent different thermal-magnetic trip characteristic curves within the V-EA series. Each curve defines the response time and current threshold at which the breaker trips. Selection must align with the specific protection requirements of the circuit being protected.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all four parts (3E40UM, 3B40UM, 3C40UM, 3Z40UM) are ROHS3 compliant.

Q: Do all substitute parts have the same approval certifications?

A: The 3E40UM, 3B40UM, and 3Z40UM carry CSA and UL508 approvals. The 3C40UM carries UL508 approval only. For applications requiring CSA certification, use 3E40UM, 3B40UM, or 3Z40UM.

Q: What is the packaging format for these parts?

A: All parts are supplied in Bulk packaging.