2B20UM 20A Thermal Magnetic Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 2B20UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 20A at 480V AC and 80V DC. This DIN rail-mounted device features a lever actuator and dual-pole configuration, designed for industrial electrical distribution and protection applications. The part maintains active product status with full compliance to CSA, UL508, and VDE standards. Equivalent and substitute parts become necessary when addressing supply chain constraints, regional availability differences, or specific approval agency requirements while maintaining identical electrical and mechanical performance parameters.

Substiute Parts

2B20UM

Altech CorporationIn Stock: 9272B20UM Datasheet

Current PartRFQ

2C20UM

Altech CorporationIn Stock: 8632C20UM Datasheet

Parametric EquivalentRFQ

2D20UM

Altech CorporationIn Stock: 11862D20UM Datasheet

Parametric EquivalentRFQ

2E20UM

Altech CorporationIn Stock: 11642E20UM Datasheet

Parametric EquivalentRFQ

2G20UM

Altech CorporationIn Stock: 11942G20UM Datasheet

Parametric EquivalentRFQ

2Z20UM

Altech CorporationIn Stock: 10232Z20UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2B20UM is determined by strict parametric equivalence across the following critical parameters: current rating (20A), voltage ratings (480V AC / 80V DC), breaker type (thermal magnetic), mounting configuration (DIN rail), actuator mechanism (lever), pole count (2), and series designation (V-EA). All substitute parts listed maintain identical specifications across these parameters. Differences in approval agency certifications (CSA, UL508, VDE combinations) do not preclude substitution but should be evaluated against specific regional or application requirements. All substitute parts are manufactured by Altech Corporation and carry ROHS3 compliance and EAR99 ECCN classification.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts (2C20UM, 2D20UM, 2E20UM, 2G20UM, 2Z20UM) are functionally equivalent to the 2B20UM and maintain active product status. Selection should prioritize parts carrying the full approval agency suite (CSA, UL508, VDE) when applications require European compliance: 2B20UM and 2C20UM meet this criterion. For North American applications where VDE certification is not required, 2D20UM, 2E20UM, 2G20UM, and 2Z20UM provide equivalent electrical and mechanical performance. Inventory availability should be considered as a secondary factor: 2D20UM offers the highest stock level at 1148 pieces. All parts maintain ROHS3 compliance and identical mechanical form factor for direct DIN rail installation.

Frequently Asked Questions (FAQ)

Q: Can 2E20UM replace 2B20UM in applications requiring VDE certification? A: No. The 2E20UM carries CSA and UL508 approvals only. Applications mandating VDE compliance require 2B20UM or 2C20UM.

Q: Are all substitute parts physically identical for DIN rail mounting? A: Yes. All parts share identical mounting type (DIN rail), pole count (2), and actuator configuration (lever), ensuring direct mechanical compatibility.

Q: What is the primary difference between substitute parts? A: The primary difference is approval agency certification. 2B20UM and 2C20UM include VDE certification, while 2D20UM, 2E20UM, 2G20UM, and 2Z20UM carry CSA and UL508 only. Electrical and mechanical parameters are identical across all parts.

Q: Can substitute parts be mixed in the same installation? A: Yes, provided the installation does not require uniform approval agency certification across all breakers. All parts are electrically and mechanically equivalent at 20A, 480V AC, 80V DC operation.

Q: Which substitute part offers the best availability? A: 2D20UM provides the highest inventory level at 1148 pieces, followed by 2E20UM at 1137 pieces.

Q: Are all parts ROHS3 compliant? A: Yes. All listed parts, including the main part 2B20UM and all substitutes, maintain ROHS3 compliance status.