2B50UM 50A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 2B50UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 50A at 480V AC and 60V DC. This DIN rail-mounted breaker is part of the V-EA series and holds active product status with CSA and UL508 approvals. Circuit breakers of this specification are essential components in industrial and commercial electrical distribution systems where overcurrent protection and thermal-magnetic trip characteristics are required. Equivalent substitute parts are identified based on matching electrical ratings, mechanical mounting specifications, and regulatory certifications.

Substiute Parts

2B50UM

Altech CorporationIn Stock: 9732B50UM Datasheet

Current PartRFQ

2D50UM

Altech CorporationIn Stock: 7582D50UM Datasheet

Parametric EquivalentRFQ

2G50UM

Altech CorporationIn Stock: 11192G50UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2B50UM are identified as parametric equivalents within the Altech Corporation V-EA series. Substitution is valid when the following parameters match exactly:

• Current Rating: 50A
• 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

The substitute parts 2D50UM and 2G50UM meet all these criteria and are therefore electrically and mechanically interchangeable with the 2B50UM in applications requiring identical electrical performance and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

All three circuit breaker models—2B50UM, 2D50UM, and 2G50UM—are active products with identical electrical specifications and regulatory certifications. Selection among these equivalents may be based on inventory availability and packaging considerations. The 2G50UM currently has the highest inventory level at 1054 pieces, followed by the 2D50UM at 710 pieces, and the 2B50UM at 900 pieces. All parts are supplied in bulk packaging and maintain ROHS3 compliance and CSA/UL508 certifications, ensuring suitability for industrial electrical distribution applications.

Frequently Asked Questions (FAQ)

Q: Are 2D50UM and 2G50UM direct replacements for 2B50UM?

A: Yes. The 2D50UM and 2G50UM are parametric equivalents with identical current ratings (50A), voltage ratings (480V AC, 60V DC), breaker type (thermal magnetic), mounting configuration (DIN rail), pole count (2), and regulatory approvals (CSA, UL508). They are electrically and mechanically interchangeable.

Q: What determines if a circuit breaker can substitute for the 2B50UM?

A: Substitution is valid only when current rating, voltage ratings (both AC and DC), breaker type, mounting type, actuator type, pole count, and approval certifications match exactly. All three models in this comparison meet these criteria.

Q: Does packaging affect substitution eligibility?

A: All substitute parts are supplied in bulk packaging identical to the main part. Packaging does not affect electrical or mechanical compatibility.

Q: Are all three models ROHS3 compliant?

A: Yes. The 2B50UM, 2D50UM, and 2G50UM are all ROHS3 compliant and hold identical CSA and UL508 certifications.

Q: Which part should be selected based on availability?

A: Selection should be based on project requirements and current inventory levels. The 2G50UM has the highest stock availability at 1054 pieces, while the 2D50UM and 2B50UM have 710 and 900 pieces respectively.