Altech Corporation 3B15UM Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The Altech Corporation 3B15UM is a three-pole thermal magnetic circuit breaker rated for 15A at 480V AC and 80V DC, designed for DIN rail mounting with lever actuation. This component is classified as Active product status and is fully compliant with CSA and UL508 approval standards. Substitute parts become necessary when the primary part number is unavailable, when inventory constraints require alternative sourcing, or when equivalent performance specifications allow for interchangeable selection within the same electrical and mechanical parameter set.

Substiute Parts

3B15UM

Altech CorporationIn Stock: 9463B15UM Datasheet

Current PartRFQ

3C15UM

Altech CorporationIn Stock: 10983C15UM Datasheet

Parametric EquivalentRFQ

3Z15UM

Altech CorporationIn Stock: 8033Z15UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3B15UM circuit breaker has two parametric equivalents: 3C15UM and 3Z15UM. All three parts share identical electrical and mechanical specifications across all critical parameters that determine substitutability. The substitution logic is based on the following key parameters:

• Current Rating: 15A (identical across all three parts)
• Voltage Rating - AC: 480V (identical across all three parts)
• Voltage Rating - DC: 80V (identical across all three parts)
• Number of Poles: 3 (identical across all three parts)
• Breaker Type: Thermal Magnetic (identical across all three parts)
• Mounting Type: DIN Rail (identical across all three parts)
• Actuator Type: Lever (identical across all three parts)
• Series: V-EA (identical across all three parts)
• Approval Agency: CSA, UL508 (identical across all three parts)

The parts differ only in their base product designation (3B15, 3C15, 3Z15), which represents different characteristic curves or trip settings within the same electrical and mechanical envelope. All three parts are manufactured by Altech Corporation and maintain full compatibility within applications requiring 15A three-pole thermal magnetic circuit breakers for 480V AC / 80V DC systems.

Parameter Comparison

Engineering Selection Recommendations

All three circuit breaker models—3B15UM, 3C15UM, and 3Z15UM—are suitable for direct substitution in applications requiring 15A three-pole thermal magnetic protection at 480V AC / 80V DC. Selection among these equivalents should be based on:

1. Availability: Current inventory levels are 847 pcs (3B15UM), 991 pcs (3C15UM), and 741 pcs (3Z15UM).
2. Product Status: All three parts maintain Active status with no obsolescence risk.
3. Compliance: All three parts carry identical CSA and UL508 approvals and are ROHS3 compliant.
4. Characteristic Curve: The base product designations (B, C, Z) indicate different trip characteristics; selection should align with the specific application's protection requirements.

Frequently Asked Questions (FAQ)

Q: Can 3C15UM be used as a direct replacement for 3B15UM?

A: Yes. Both parts are identical in current rating (15A), voltage ratings (480V AC / 80V DC), pole configuration (3-pole), breaker type (thermal magnetic), mounting type (DIN rail), and approval certifications (CSA, UL508). The difference lies in the characteristic curve designation; verify that the C-curve characteristic is appropriate for your application.

Q: What is the difference between 3B15UM, 3C15UM, and 3Z15UM?

A: All three parts share identical electrical and mechanical specifications. The letters B, C, and Z in the base product number indicate different thermal magnetic trip characteristics. Selection should be based on the specific protection curve required by your circuit design.

Q: Are all three parts RoHS compliant?

A: Yes. All three circuit breaker models (3B15UM, 3C15UM, 3Z15UM) are ROHS3 compliant and REACH unaffected.

Q: Can these circuit breakers be used in both AC and DC applications?

A: Yes. All three models are rated for 480V AC and 80V DC operation, allowing use in mixed-voltage systems within these specifications.

Q: What is the packaging format for these parts?

A: All three models are supplied in Bulk packaging, suitable for integration into larger assemblies or distribution systems.

Q: Are there any approval or certification differences between the three models?

A: No. All three models carry identical CSA and UL508 approvals, ensuring equivalent regulatory compliance across all three part numbers.