3Z32UM 32A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 3Z32UM is a three-pole thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 32A at 480V AC and 60V DC. This DIN rail-mounted breaker is part of the V-EA series and maintains active product status with full CSA and UL508 certification. Substitute parts are identified based on identical electrical ratings, mechanical specifications, and approval certifications to ensure direct interchangeability in DIN rail installations.

Substiute Parts

3Z32UM

Altech CorporationIn Stock: 11443Z32UM Datasheet

Current PartRFQ

3C32UM

Altech CorporationIn Stock: 11053C32UM Datasheet

Parametric EquivalentRFQ

3D32UM

Altech CorporationIn Stock: 12073D32UM Datasheet

Parametric EquivalentRFQ

3E32UM

Altech CorporationIn Stock: 8753E32UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3Z32UM circuit breaker has three parametric equivalents: 3C32UM, 3D32UM, and 3E32UM. Substitution is valid based on the following criteria:

All substitute parts share identical specifications across the following critical parameters:

• Current Rating: 32A
• Voltage Rating: 480V AC / 60V DC
• Breaker Type: Thermal Magnetic
• Number of Poles: 3
• Mounting Type: DIN Rail
• Actuator Type: Lever
• Approval Agencies: CSA, UL508
• Series: V-EA
• RoHS Status: ROHS3 Compliant

The primary distinction between these parts is the thermal-magnetic characteristic class (Z, C, D, E), which defines the trip curve behavior. Each variant maintains full compatibility within DIN rail installations where the specific characteristic class is acceptable for the application.

Parameter Comparison

Engineering Selection Recommendations

All four part numbers (3Z32UM, 3C32UM, 3D32UM, 3E32UM) are active products with identical electrical and mechanical specifications. Selection between these variants should be based on:

1. Application-specific thermal-magnetic characteristic class requirements (Z, C, D, or E curve)
2. Current inventory availability
3. Lead time considerations
4. Existing system documentation and standardization

All parts carry CSA and UL508 certifications, ROHS3 compliance, and are packaged in bulk format. No performance degradation occurs when substituting between these part numbers within applications where the characteristic class is interchangeable.

Frequently Asked Questions (FAQ)

Q: Can 3C32UM replace 3Z32UM in any application? A: Direct replacement is valid only when the application permits the C-characteristic thermal-magnetic curve. The electrical ratings (32A, 480V AC, 60V DC) and mechanical specifications (3-pole, DIN rail, lever actuator) are identical. Verify that the characteristic class change does not conflict with system protection requirements.

Q: Are all substitute parts certified to the same standards? A: Yes. All four part numbers carry identical CSA and UL508 certifications and maintain ROHS3 compliance. No certification differences exist between 3Z32UM, 3C32UM, 3D32UM, and 3E32UM.

Q: What is the difference between the Z, C, D, and E characteristic classes? A: The characteristic class defines the trip curve behavior of the thermal-magnetic breaker. This parameter is provided in the part number designation but does not affect voltage rating, current rating, pole count, or mounting compatibility. Selection depends on the specific overcurrent protection curve required by the application.

Q: Can these parts be mixed in the same DIN rail installation? A: Yes, from a mechanical and electrical standpoint, all four parts are compatible with standard DIN rail systems. However, system design documentation should specify whether mixed characteristic classes are acceptable for the protection scheme.

Q: Is packaging identical across all substitute parts? A: All parts are supplied in bulk packaging. No packaging differences exist between the substitute options.