Altech Corporation 2B3UM Thermal Magnetic Circuit Breaker Equivalent & Substitute Parts

Part Overview

The Altech Corporation 2B3UM is a thermal magnetic circuit breaker rated for 3A at 480V AC and 80V DC, designed for DIN rail mounting with lever actuation. This two-pole breaker is part of the V-EA series and maintains active product status with full CSA and UL508 approvals. Equivalent and substitute parts within this series share identical electrical ratings and mechanical mounting specifications, enabling direct replacement in applications requiring the same performance envelope.

Substiute Parts

2B3UM

Altech CorporationIn Stock: 6432B3UM Datasheet

Current PartRFQ

2C3UM

Altech CorporationIn Stock: 8412C3UM Datasheet

Parametric EquivalentRFQ

2D3UM

Altech CorporationIn Stock: 10392D3UM Datasheet

Parametric EquivalentRFQ

2G3UM

Altech CorporationIn Stock: 8552G3UM Datasheet

Parametric EquivalentRFQ

2Z3UM

Altech CorporationIn Stock: 8712Z3UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the Altech V-EA series 3A circuit breaker line is determined by strict equivalence across the following parameters: current rating (3A), voltage ratings (480V AC / 80V DC), breaker type (thermal magnetic), mounting configuration (DIN rail), actuator mechanism (lever), and pole count (2-pole). All substitute parts listed maintain identical electrical and mechanical specifications to the 2B3UM. The primary differentiator among these parts is the trip characteristic designation (B, C, D, G, Z), which defines the thermal-magnetic response curve but does not alter the rated voltage or current capacity. Parts 2C3UM, 2D3UM, 2G3UM, and 2Z3UM are direct parametric equivalents suitable for replacement applications where the specific trip characteristic is compatible with system requirements.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and full compliance with RoHS3 and REACH requirements. The 2B3UM, 2G3UM, and 2Z3UM carry CSA and UL508 certifications, while 2C3UM and 2D3UM include additional VDE approval. Selection among these equivalents should be based on the specific trip characteristic requirement of the application. Parts 2C3UM and 2D3UM offer expanded international certification coverage through VDE approval, suitable for applications requiring broader compliance documentation. All parts are available in bulk packaging with current inventory levels ranging from 618 to 1007 units.

Frequently Asked Questions (FAQ)

Q: Can 2C3UM, 2D3UM, 2G3UM, and 2Z3UM be used interchangeably with 2B3UM?

A: These parts are parametric equivalents sharing identical current ratings (3A), voltage ratings (480V AC / 80V DC), mounting type (DIN rail), and mechanical configuration (2-pole lever actuator). Interchangeability depends on whether the application specifies a particular trip characteristic. The letter designation (B, C, D, G, Z) indicates the thermal-magnetic response curve; selection must align with system protection requirements.

Q: What is the difference between the trip characteristics?

A: Trip characteristic designations define the thermal-magnetic response curve of the breaker. The provided data specifies only that all parts are thermal magnetic breakers rated for 3A; specific trip curve parameters are not included in the available technical parameters.

Q: Are there compliance differences between substitute parts?

A: 2C3UM and 2D3UM include VDE certification in addition to CSA and UL508 approvals. 2B3UM, 2G3UM, and 2Z3UM carry CSA and UL508 certifications. All parts meet ROHS3 compliance and REACH requirements. Selection should account for regional or application-specific certification mandates.

Q: What packaging is available?

A: All parts are supplied in bulk packaging. Current inventory levels are: 2B3UM (618 pcs), 2C3UM (748 pcs), 2D3UM (1007 pcs), 2G3UM (835 pcs), and 2Z3UM (814 pcs).

Q: Are these parts suitable for both AC and DC applications?

A: Yes. All parts are rated for 480V AC and 80V DC operation, enabling use in mixed AC/DC electrical systems within these voltage parameters.