3C3UM 3A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 3C3UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 3A current with 480V AC and 80V DC voltage ratings. This DIN rail-mounted breaker features a lever actuator and three poles, designed for industrial control applications. The product is currently active and in stock with 781 units available. Substitute parts become necessary when the primary part is unavailable, when inventory constraints require alternative sourcing, or when operational requirements allow for functionally equivalent alternatives within the same electrical and mechanical specifications.

Substiute Parts

3C3UM

Altech CorporationIn Stock: 7913C3UM Datasheet

Current PartRFQ

3D3UM

Altech CorporationIn Stock: 10313D3UM Datasheet

Parametric EquivalentRFQ

3G3UM

Altech CorporationIn Stock: 7903G3UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3C3UM, 3D3UM, and 3G3UM circuit breakers are parametric equivalents within the Altech V-EA series. Substitution is valid based on the following matching criteria:

• Current Rating: All three parts are rated for 3A
• Voltage Ratings: All three parts support 480V AC and 80V DC
• Mounting Configuration: All three are DIN rail-mounted with lever actuators and three poles
• Breaker Technology: All three utilize thermal magnetic trip mechanisms
• Packaging: All three are supplied in bulk packaging
• Compliance: All three hold ROHS3 compliance and REACH unaffected status

The primary distinction between these parts lies in their trip characteristic designations (C, D, and G), which define the thermal-magnetic response curve. These designations represent different trip point configurations within the thermal magnetic breaker family, allowing selection based on specific load characteristics and application requirements.

Parameter Comparison

Engineering Selection Recommendations

All three circuit breaker models—3C3UM, 3D3UM, and 3G3UM—maintain active product status and full compliance with applicable regulatory standards. The 3D3UM offers the highest current inventory level at 946 units, followed by the 3G3UM at 703 units and the 3C3UM at 781 units. All parts carry ROHS3 compliance and REACH unaffected designation. The 3C3UM and 3D3UM both maintain full CSA, UL508, and VDE approvals, while the 3G3UM holds CSA and UL508 certifications. Selection should be based on application-specific trip characteristic requirements and certification scope alignment with the target installation environment.

Frequently Asked Questions (FAQ)

Q: Can the 3D3UM replace the 3C3UM in an existing installation?

A: Yes, the 3D3UM is a parametric equivalent with identical electrical ratings (3A, 480V AC, 80V DC), mounting configuration (DIN rail, lever actuator, three poles), and breaker technology (thermal magnetic). The primary difference is the trip characteristic designation. Both parts hold equivalent certifications (CSA, UL508, VDE) and ROHS3 compliance.

Q: What is the significance of the trip characteristic letters (C, D, G)?

A: The trip characteristic letters define the thermal-magnetic response curve of the breaker. These designations determine the specific current thresholds and response times for thermal and magnetic trip mechanisms. Selection should align with the protected circuit's load characteristics and application requirements.

Q: Are all three parts suitable for 480V AC and 80V DC applications?

A: Yes, all three circuit breakers—3C3UM, 3D3UM, and 3G3UM—are rated for 480V AC and 80V DC operation. They are electrically equivalent in voltage handling capability.

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

A: Yes, all three parts are DIN rail-mounted with identical mounting type specifications, ensuring mechanical compatibility within the same control panel layout.

Q: Which part has the best availability?

A: The 3D3UM currently has the highest inventory level with 946 units in stock, compared to 781 units for the 3C3UM and 703 units for the 3G3UM.

Q: Are there any certification differences between these parts?

A: The 3C3UM and 3D3UM both carry CSA, UL508, and VDE approvals. The 3G3UM holds CSA and UL508 certifications. All three maintain ROHS3 compliance and REACH unaffected status.