3E2UM 2A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 3E2UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 2A at 480V AC and 80V DC. This DIN rail-mounted breaker features a lever actuator and three-pole configuration, designed for industrial control applications. The part is currently active in production with 809 units in stock. Equivalent substitute parts are necessary to ensure supply chain continuity, accommodate regional availability differences, or address specific application requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

3E2UM

Altech CorporationIn Stock: 8833E2UM Datasheet

Current PartRFQ

3D2UM

Altech CorporationIn Stock: 10273D2UM Datasheet

Parametric EquivalentRFQ

3G2UM

Altech CorporationIn Stock: 9553G2UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3E2UM has two parametric equivalents within the Altech Corporation V-EA series: 3D2UM and 3G2UM. Substitution eligibility is determined by strict equivalence across the following critical parameters:

• Current Rating: 2A (identical across all parts)
• Voltage Rating - AC: 480V (identical across all parts)
• Voltage Rating - DC: 80V (identical across all parts)
• Breaker Type: Thermal Magnetic (identical across all parts)
• Number of Poles: 3 (identical across all parts)
• Mounting Type: DIN Rail (identical across all parts)
• Actuator Type: Lever (identical across all parts)
• Series: V-EA (identical across all parts)

All three parts share identical electrical specifications and mechanical form factors, making them direct parametric equivalents. The primary distinction lies in the thermal-magnetic characteristic curve designation (E, D, and G respectively), which defines the trip point behavior but does not alter the rated voltage or current capacity.

Parameter Comparison

Engineering Selection Recommendations

All three circuit breaker models (3E2UM, 3D2UM, 3G2UM) are active products with full regulatory compliance. Selection between these equivalents should be based on:

1. Availability: 3D2UM offers the highest inventory level at 1005 units, followed by 3G2UM at 935 units, and 3E2UM at 809 units.

2. Regulatory Requirements: 3D2UM carries additional VDE approval beyond CSA and UL508, providing broader international compliance if required by application standards.

3. Characteristic Curve: The E, D, and G designations indicate different thermal-magnetic trip characteristics. Application-specific requirements for trip point behavior should determine final selection, though all three maintain identical rated voltage and current specifications.

All parts are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can 3D2UM replace 3E2UM in an existing installation?

A: Yes. Both parts are parametric equivalents with identical current rating (2A), voltage ratings (480V AC / 80V DC), pole configuration (3-pole), mounting type (DIN Rail), and actuator type (Lever). They are direct substitutes from an electrical and mechanical standpoint.

Q: What is the difference between the E, D, and G designations?

A: These letters denote the thermal-magnetic characteristic curve, which defines the trip point behavior under fault conditions. However, all three variants maintain identical rated voltage and current capacity, making them functionally equivalent for applications where the specific trip curve is not a critical design parameter.

Q: Does 3D2UM's additional VDE approval affect compatibility?

A: No. VDE approval is an additional certification that expands the part's compliance scope. It does not alter electrical or mechanical specifications, and 3D2UM remains fully compatible with applications designed for 3E2UM or 3G2UM.

Q: Are all three parts available in the same packaging?

A: Yes. All three parts are supplied in bulk packaging and are mounted identically on DIN rail systems.

Q: Which part should I select if availability is a concern?

A: 3D2UM has the highest current inventory at 1005 units. However, all three parts are active products, and selection should prioritize application-specific requirements over inventory levels alone.