Altech Corporation 1B2UM Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The Altech Corporation 1B2UM is a thermal magnetic circuit breaker rated for 2A at 480V AC / 42V DC with lever actuation and DIN rail mounting. This single-pole breaker is designed for industrial control and distribution applications requiring overcurrent protection. The part is currently active in production with full inventory availability. Substitute parts may be required due to supply chain constraints, regional availability, or specific certification requirements for end-use applications.

Substiute Parts

1B2UM

Altech CorporationIn Stock: 8151B2UM Datasheet

Current PartRFQ

1C2UM

Altech CorporationIn Stock: 10241C2UM Datasheet

Parametric EquivalentRFQ

1D2UM

Altech CorporationIn Stock: 9591D2UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1B2UM are determined by electrical and mechanical parameter equivalence within the Altech V-EA series. The following parameters establish substitution eligibility:

• Current Rating: 2A (exact match required)
• Voltage Rating - AC: 480V (exact match required)
• Voltage Rating - DC: 42V (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Actuator Type: Lever (exact match required)
• Number of Poles: 1 (exact match required)

The substitute parts 1C2UM and 1D2UM meet all electrical and mechanical criteria for direct substitution with the 1B2UM within the V-EA series platform.

Parameter Comparison

Engineering Selection Recommendations

All three parts—1B2UM, 1C2UM, and 1D2UM—are active production items with identical electrical and mechanical specifications. Selection between these parts should be based on:

• Approval agency requirements: The 1B2UM carries CSA and UL508 certifications. The 1C2UM and 1D2UM include additional VDE certification, making them suitable for applications requiring European compliance standards.
• Inventory availability: Current stock levels are 721 pcs (1B2UM), 922 pcs (1C2UM), and 879 pcs (1D2UM).
• Regional regulatory requirements: Applications in markets requiring VDE compliance should specify 1C2UM or 1D2UM.

Frequently Asked Questions (FAQ)

Q: Can 1C2UM or 1D2UM be used as direct replacements for 1B2UM in existing installations?

A: Yes. All three parts share identical electrical ratings (2A, 480V AC, 42V DC), breaker type (thermal magnetic), mounting configuration (DIN rail), and actuator design (lever). They are mechanically and electrically interchangeable within the V-EA series.

Q: What is the difference between 1B2UM, 1C2UM, and 1D2UM?

A: The primary difference is certification scope. The 1B2UM is certified by CSA and UL508. The 1C2UM and 1D2UM include additional VDE certification for European market compliance. All other electrical and mechanical parameters are identical.

Q: Are there any packaging or mounting differences between these parts?

A: No. All three parts are supplied in bulk packaging and mount identically on DIN rail systems. No mechanical modifications or adapter plates are required for substitution.

Q: Which part should I specify for international applications?

A: For applications requiring European compliance, specify 1C2UM or 1D2UM due to VDE certification. For North American applications, 1B2UM is sufficient with CSA and UL508 approvals.

Q: Is RoHS compliance consistent across all substitute parts?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements uniformly.