3D2UM Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The 3D2UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 2A at 480V AC / 80V DC with a 3-pole lever-actuated design for DIN rail mounting. This component is classified as Active product status and is ROHS3 compliant. Substitute parts become necessary when the primary part is unavailable, when inventory constraints require alternative sourcing, or when operational requirements allow for functionally equivalent alternatives within the same electrical and mechanical parameter set.

Substiute Parts

3D2UM

Altech CorporationIn Stock: 10273D2UM Datasheet

Current PartRFQ

3E2UM

Altech CorporationIn Stock: 8833E2UM Datasheet

Parametric EquivalentRFQ

3G2UM

Altech CorporationIn Stock: 9553G2UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3D2UM is determined by strict equivalence across the following critical parameters: current rating (2A), AC voltage rating (480V), DC voltage rating (80V), number of poles (3), breaker type (thermal magnetic), actuator type (lever), and mounting configuration (DIN rail). All substitute parts must maintain identical electrical performance characteristics and mechanical form factor to ensure direct interchangeability without circuit redesign or mechanical modification.

The identified substitute parts—3E2UM and 3G2UM—meet all mandatory electrical and mechanical criteria. Both are manufactured by Altech Corporation within the V-EA series and share identical ratings, pole configuration, and mounting specifications. Differences in approval agency certifications (3E2UM and 3G2UM carry CSA and UL508 versus the primary part's CSA, UL508, and VDE) do not preclude substitution when VDE certification is not explicitly required by application specifications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—3D2UM, 3E2UM, and 3G2UM—maintain Active product status and full ROHS3 compliance, ensuring long-term availability and regulatory alignment. Selection between these equivalents should be based on certification requirements specific to the application. When VDE certification is mandatory, the 3D2UM is the required choice. When CSA and UL508 certifications satisfy application requirements, 3E2UM and 3G2UM are valid alternatives. Current inventory levels (3D2UM: 1005 pcs, 3E2UM: 809 pcs, 3G2UM: 935 pcs) may inform sourcing decisions when lead time or stock availability is a consideration.

Frequently Asked Questions (FAQ)

Q: Can 3E2UM or 3G2UM be used as direct replacements for 3D2UM in all applications?

A: Direct replacement is possible when VDE certification is not a contractual or regulatory requirement. Both substitute parts carry identical electrical ratings (2A, 480V AC, 80V DC) and mechanical specifications (3-pole, lever-actuated, DIN rail mount). Verify application documentation to confirm certification requirements before substitution.

Q: What is the difference between 3D2UM, 3E2UM, and 3G2UM?

A: The three parts are electrically and mechanically identical within the V-EA series. The primary distinction is certification scope: 3D2UM includes VDE approval, while 3E2UM and 3G2UM carry CSA and UL508 certifications only. The designations (D, E, G) reflect internal Altech Corporation product line differentiation.

Q: Are there any mechanical compatibility issues when substituting between these parts?

A: No. All three parts share identical DIN rail mounting specifications, lever actuator design, and 3-pole configuration. Physical installation and electrical connection are interchangeable without modification.

Q: Which part should be selected for new designs?

A: Selection depends on certification requirements. For applications requiring VDE compliance, specify 3D2UM. For applications satisfied by CSA and UL508, either 3E2UM or 3G2UM may be selected based on inventory availability and lead time.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts—3D2UM, 3E2UM, and 3G2UM—are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.