3G5UM Thermal Magnetic Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The 3G5UM is a three-pole thermal magnetic circuit breaker manufactured by Altech Corporation, part of the V-EA series. This DIN rail-mounted breaker is rated for 5A at 480V AC and 80V DC, featuring lever actuation and CSA/UL508 approval. The product is active and in stock with 795 units available. Equivalent substitute parts are necessary when primary inventory is depleted, when specific thermal characteristics (C, D, or E curve) are required for application-specific protection, or when alternative certifications (VDE) are needed for international installations.

Substiute Parts

3G5UM

Altech CorporationIn Stock: 9003G5UM Datasheet

Current PartRFQ

3C5UM

Altech CorporationIn Stock: 8773C5UM Datasheet

Parametric EquivalentRFQ

3D5UM

Altech CorporationIn Stock: 8873D5UM Datasheet

Parametric EquivalentRFQ

3E5UM

Altech CorporationIn Stock: 9903E5UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3G5UM circuit breaker can be substituted with the following Altech Corporation parts: 3C5UM, 3D5UM, and 3E5UM. All substitute parts maintain identical electrical and mechanical specifications across the following critical parameters:

• Current Rating: 5A
• Voltage Rating: 480V AC / 80V DC
• Number of Poles: 3
• Mounting Type: DIN Rail
• Actuator Type: Lever
• Breaker Type: Thermal Magnetic
• Series: V-EA
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The substitution is based on thermal characteristic curve designation (G, C, D, E), which defines the trip point behavior but does not alter the fundamental electrical ratings or mechanical interface. All parts are approved by CSA and UL508; 3C5UM and 3D5UM carry additional VDE certification.

Parameter Comparison

Engineering Selection Recommendations

All four parts (3G5UM, 3C5UM, 3D5UM, 3E5UM) are active products with current manufacturing status and full stock availability. Selection between these parts should be based on:

1. Thermal characteristic curve requirement: The letter designation (G, C, D, E) specifies the trip point curve. Select the curve appropriate for the protected circuit's inrush current profile and fault sensitivity requirements.

2. Certification scope: Parts 3C5UM and 3D5UM include VDE certification in addition to CSA and UL508. Select these variants for installations requiring European compliance or international distribution.

3. Inventory availability: All parts maintain adequate stock levels (795–952 units). Selection may be driven by supply chain logistics or procurement lead times.

4. Regulatory compliance: All parts are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance restrictions.

Frequently Asked Questions (FAQ)

Q: Can 3C5UM, 3D5UM, and 3E5UM be used interchangeably with 3G5UM in the same circuit?

A: These parts are mechanically and electrically interchangeable in terms of mounting, voltage rating, current rating, and pole configuration. However, they differ in thermal characteristic curve. The curve determines trip point behavior under overload conditions. Substitution is valid only if the application permits the alternative curve characteristic.

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

A: The letter designation specifies the thermal trip curve, which defines the current level and time duration at which the breaker trips during overload conditions. Each curve is optimized for different load types and fault sensitivity requirements. Consult application requirements to determine the appropriate curve.

Q: Are 3C5UM and 3D5UM suitable for European markets?

A: Yes. 3C5UM and 3D5UM carry VDE certification in addition to CSA and UL508 approval, making them suitable for European installations and international applications requiring multi-standard compliance.

Q: Do all substitute parts use the same DIN rail mounting footprint?

A: Yes. All parts (3G5UM, 3C5UM, 3D5UM, 3E5UM) are DIN rail-mounted with identical mechanical interfaces and lever actuation, ensuring direct physical substitution without modification to the control panel or mounting structure.

Q: What is the packaging format for these circuit breakers?

A: All parts are supplied in bulk packaging. Confirm packaging requirements and minimum order quantities with the supplier for procurement planning.