2G8UM 8A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 2G8UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, part of the V-EA series. This DIN rail-mounted breaker is designed for 8A applications at 480V AC / 80V DC with a 2-pole lever actuator configuration. The product is currently active and available in bulk packaging with 769 units in stock. Equivalent and substitute parts are necessary when primary inventory is depleted, when alternative thermal characteristics are required for specific applications, or when sourcing from multiple suppliers is needed for supply chain resilience.

Substiute Parts

2G8UM

Altech CorporationIn Stock: 7802G8UM Datasheet

Current PartRFQ

2C8UM

Altech CorporationIn Stock: 7372C8UM Datasheet

Parametric EquivalentRFQ

2D8UM

Altech CorporationIn Stock: 9592D8UM Datasheet

Parametric EquivalentRFQ

2Z8UM

Altech CorporationIn Stock: 7472Z8UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 2G8UM circuit breaker has three parametric equivalents within the Altech V-EA series: 2C8UM, 2D8UM, and 2Z8UM. All four parts share identical electrical and mechanical specifications across the critical substitution parameters: 8A current rating, 480V AC / 80V DC voltage ratings, 2-pole thermal magnetic configuration, lever actuation, and DIN rail mounting. The primary distinction between these parts lies in their thermal characteristic designations (G, C, D, and Z), which define their trip curves and response times under fault conditions. All parts maintain ROHS3 compliance, active product status, and UL508 certification. The 2D8UM and 2C8UM additionally carry VDE approval.

Parameter Comparison

Engineering Selection Recommendations

All four parts—2G8UM, 2C8UM, 2D8UM, and 2Z8UM—are active products with full regulatory compliance. Selection between these equivalents should be based on application-specific thermal trip curve requirements and regional certification needs. The 2D8UM and 2C8UM offer extended compliance with VDE certification in addition to CSA and UL508 approvals, making them suitable for applications requiring European standards alignment. The 2G8UM and 2Z8UM maintain CSA and UL508 certifications. All parts are ROHS3 compliant and suitable for direct substitution where thermal characteristic compatibility is confirmed. Inventory availability ranges from 666 to 864 units across all four variants.

Frequently Asked Questions (FAQ)

Q: Can 2C8UM, 2D8UM, and 2Z8UM be used interchangeably with 2G8UM?

A: These parts are parametric equivalents with identical electrical ratings (8A, 480V AC / 80V DC), mechanical configuration (2-pole, DIN rail, lever actuator), and regulatory approvals. Interchangeability depends on whether the application requires a specific thermal characteristic curve. The letter designation (G, C, D, Z) indicates the trip curve classification; substitution is valid only when the thermal characteristic is compatible with the circuit protection requirements.

Q: What is the difference between the thermal characteristic designations?

A: The thermal characteristic letters (G, C, D, Z) define the trip curve and response time of the breaker under overload and fault conditions. These designations are provided in the part numbers but specific trip curve parameters are not included in this reference. Consult the manufacturer's technical datasheets for detailed trip curve specifications.

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

A: Yes. All four parts—2G8UM, 2C8UM, 2D8UM, and 2Z8UM—are supplied in bulk packaging with comparable inventory levels (666–864 units in stock).

Q: Which parts have the broadest regulatory approval?

A: The 2C8UM and 2D8UM carry CSA, UL508, and VDE certifications, providing the widest regulatory coverage. The 2G8UM and 2Z8UM are certified by CSA and UL508. All parts are ROHS3 compliant.

Q: Can I substitute based on inventory availability alone?

A: No. While inventory levels vary (2D8UM has the highest at 864 units), substitution must be based on thermal characteristic compatibility with your application. Inventory should be a secondary consideration after confirming thermal curve suitability.