Circuit Breaker 3B1UM Equivalent & Substitute Parts

Part Overview

The Altech Corporation 3B1UM is a three-pole thermal magnetic circuit breaker rated for 1A at 480V AC and 80V DC, designed for DIN rail mounting with lever actuation. This component is currently active in production with full inventory availability. Equivalent and substitute parts within the V-EA series maintain identical electrical and mechanical specifications, enabling direct replacement in applications where component availability or supply chain requirements necessitate alternative part selection.

Substiute Parts

3B1UM

Altech CorporationIn Stock: 11743B1UM Datasheet

Current PartRFQ

3C1UM

Altech CorporationIn Stock: 11443C1UM Datasheet

Parametric EquivalentRFQ

3D1UM

Altech CorporationIn Stock: 9323D1UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within this product family is determined by equivalence across all critical electrical and mechanical parameters: current rating (1A), AC voltage rating (480V), DC voltage rating (80V), pole configuration (3-pole), breaker technology (thermal magnetic), mounting interface (DIN rail), and actuation method (lever). Parts 3C1UM and 3D1UM satisfy these requirements and are classified as parametric equivalents to the main part 3B1UM. All three parts belong to the V-EA series and maintain active product status with full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

All three parts—3B1UM, 3C1UM, and 3D1UM—are active products with identical electrical and mechanical specifications. Selection between these equivalents should be based on inventory availability and supply chain requirements. Parts 3C1UM and 3D1UM carry additional VDE approval beyond the CSA and UL508 certifications present on 3B1UM, providing expanded regulatory coverage for applications requiring European compliance. All parts maintain ROHS3 compliance and REACH unaffected status, ensuring environmental regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can 3C1UM or 3D1UM be used as direct replacements for 3B1UM? A: Yes. All three parts share identical current rating (1A), voltage ratings (480V AC, 80V DC), pole configuration (3-pole), breaker type (thermal magnetic), mounting interface (DIN rail), and actuation method (lever). They are parametric equivalents within the V-EA series.

Q: What is the difference between 3B1UM, 3C1UM, and 3D1UM? A: The parts are electrically and mechanically identical. The primary differences are base product designations (3B1, 3C1, 3D1) and regulatory approvals. Parts 3C1UM and 3D1UM include VDE certification in addition to CSA and UL508 approvals.

Q: Are there packaging differences between these parts? A: All three parts are supplied in bulk packaging. No packaging format variations exist between the equivalents.

Q: Which part should be selected for European applications? A: Parts 3C1UM and 3D1UM include VDE approval, making them suitable for applications requiring European regulatory compliance. Part 3B1UM carries CSA and UL508 certifications.

Q: Are all parts currently in stock? A: Yes. 3B1UM has 1081 units, 3C1UM has 1122 units, and 3D1UM has 828 units available as new original stock.