3G3UM Thermal Magnetic Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The 3G3UM is a three-pole thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 3A at 480V AC and 80V DC. This DIN rail-mounted breaker features lever actuation and is part of the V-EA series. The product is active and widely stocked, with 703 units currently available. Finding equivalent substitute parts is essential for supply chain continuity, maintenance planning, and system redundancy in industrial control applications.

Substiute Parts

3G3UM

Altech CorporationIn Stock: 7903G3UM Datasheet

Current PartRFQ

3C3UM

Altech CorporationIn Stock: 7913C3UM Datasheet

Parametric EquivalentRFQ

3D3UM

Altech CorporationIn Stock: 10313D3UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3G3UM circuit breaker has two parametric equivalents within the Altech Corporation V-EA series: 3C3UM and 3D3UM. Substitution eligibility is determined by the following critical parameters that must remain identical across all parts:

• Current Rating: 3A
• Voltage Rating - AC: 480V
• Voltage Rating - DC: 80V
• Number of Poles: 3
• Breaker Type: Thermal Magnetic
• Mounting Type: DIN Rail
• Actuator Type: Lever
• Series: V-EA
• Packaging: Bulk

All three parts (3G3UM, 3C3UM, 3D3UM) share identical electrical and mechanical specifications. The primary distinction lies in the thermal characteristic curve designation (G, C, and D respectively), which defines the trip time response under overload conditions. These designations represent different thermal response profiles suitable for various load types and protection requirements.

Parameter Comparison

Engineering Selection Recommendations

All three circuit breaker models (3G3UM, 3C3UM, 3D3UM) maintain active product status and full compliance with regulatory requirements. The 3C3UM and 3D3UM variants carry additional VDE certification beyond the CSA and UL508 approvals present on the 3G3UM. All parts are ROHS3 compliant and REACH unaffected, meeting current environmental standards.

Selection between these equivalents should be based on application-specific thermal response requirements and regional certification needs. The 3D3UM offers the highest current inventory availability at 946 units, followed by 3C3UM at 781 units and 3G3UM at 703 units. All parts are packaged in bulk and suitable for direct substitution in DIN rail-mounted control systems rated for 480V AC / 80V DC operation.

Frequently Asked Questions (FAQ)

Q: Can 3C3UM and 3D3UM be used interchangeably with 3G3UM?

A: Yes, within the constraints of your application's thermal response requirements. All three parts share identical electrical ratings (3A, 480V AC, 80V DC), pole configuration (3-pole), mounting type (DIN Rail), and actuator design (Lever). The thermal characteristic curve designation (G, C, D) determines trip time response under overload conditions and should match your circuit protection strategy.

Q: What is the difference between the G, C, and D thermal characteristics?

A: The letters designate different thermal response profiles. These characteristics define how quickly the breaker trips under various overload conditions. Selection depends on the specific load type and protection requirements of your application.

Q: Are there any certification differences between these parts?

A: The 3G3UM carries CSA and UL508 approvals. The 3C3UM and 3D3UM carry CSA, UL508, and VDE approvals. If your application requires VDE certification, use 3C3UM or 3D3UM. All parts meet ROHS3 compliance and REACH requirements.

Q: What is the current inventory status?

A: 3G3UM: 703 units, 3C3UM: 781 units, 3D3UM: 946 units. All are new original stock in bulk packaging.

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

A: Yes. All three breakers are rated for 480V AC and 80V DC operation, supporting both AC and DC circuit protection in DIN rail-mounted systems.