3C4UM 4A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 3C4UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 4A at 480V AC / 80V DC with a 3-pole lever actuator designed for DIN rail mounting. This component is currently active in production with 787 units in stock. Substitute parts become necessary when the primary part is unavailable, when inventory constraints require alternative sourcing, or when operational requirements align with equivalent specifications across the V-EA series.

Substiute Parts

3C4UM

Altech CorporationIn Stock: 8533C4UM Datasheet

Current PartRFQ

3D4UM

Altech CorporationIn Stock: 7293D4UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3D4UM qualifies as a parametric equivalent to the 3C4UM based on the following matching specifications:

• Current Rating: 4A (identical)
• Voltage Rating - AC: 480V (identical)
• Voltage Rating - DC: 80V (identical)
• Number of Poles: 3 (identical)
• Breaker Type: Thermal Magnetic (identical)
• Actuator Type: Lever (identical)
• Mounting Type: DIN Rail (identical)
• Series: V-EA (identical)
• Approval Agencies: CSA, UL508, VDE (identical)
• RoHS Status: ROHS3 Compliant (identical)

Both parts share the same electrical performance envelope and mechanical interface requirements. The substitution is valid where the 3C4UM is specified, provided the application does not require the specific trip characteristic curve designation.

Parameter Comparison

Engineering Selection Recommendations

Both the 3C4UM and 3D4UM are active production components with full regulatory compliance across CSA, UL508, and VDE standards. Selection between these parts should be based on availability and inventory status. The 3C4UM maintains higher stock levels at 787 units, while the 3D4UM provides 668 units. Both parts meet ROHS3 compliance requirements and are suitable for applications requiring thermal magnetic protection at 4A in three-pole DIN rail configurations. The electrical and mechanical specifications are identical, making either part functionally interchangeable within the specified voltage and current parameters.

Frequently Asked Questions (FAQ)

Q: Can the 3D4UM replace the 3C4UM in existing installations?

A: Yes. Both parts share identical electrical ratings (4A, 480V AC, 80V DC), mechanical mounting (DIN rail, 3-pole lever), and regulatory approvals (CSA, UL508, VDE). The parts are functionally equivalent for applications within these specifications.

Q: What is the difference between the 3C4UM and 3D4UM?

A: The parts differ only in their trip characteristic curve designation (C-characteristic versus D-characteristic). All other electrical, mechanical, and compliance parameters are identical.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the 3C4UM and 3D4UM are ROHS3 compliant and meet REACH requirements.

Q: Which part should I select based on availability?

A: The 3C4UM has higher current inventory at 787 units. The 3D4UM is available with 668 units in stock. Selection should prioritize availability requirements for your application timeline.

Q: Do these parts require any special handling or storage considerations?

A: Moisture Sensitivity Level is not applicable for both parts. Standard industrial component storage practices apply.