3Z5UM 5A Thermal Magnetic Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 3Z5UM is a three-pole thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 5A at 480V AC / 80V DC with lever actuation and DIN rail mounting. This component is classified as Active product status with full CSA and UL508 approval. Substitute parts become necessary when the primary part is unavailable, when inventory constraints require alternative sourcing, or when specific thermal-magnetic characteristics (Z, C, D, or E) are required for application-specific protection curves.

Substiute Parts

3Z5UM

Altech CorporationIn Stock: 11053Z5UM 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

All substitute parts for the 3Z5UM maintain identical electrical and mechanical parameters across the following critical specifications:

• 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
• Approval Agencies: CSA, UL508 (with extended VDE certification available on select substitutes)

The substitutes differ only in their thermal-magnetic trip characteristics, designated by the character code in the part number (Z, C, D, E). These character designations define the specific trip curve and response time to overcurrent conditions. All substitute parts are manufactured by Altech Corporation and maintain Active product status with ROHS3 compliance and REACH unaffected status.

Parameter Comparison

Engineering Selection Recommendations

All four parts (3Z5UM, 3C5UM, 3D5UM, 3E5UM) are Active status components with full CSA and UL508 certification, ensuring compliance with industrial control standards. The 3C5UM and 3D5UM variants provide extended VDE certification, which may be required for European market applications or installations subject to VDE standards.

Selection between these substitutes is determined solely by the required thermal-magnetic trip characteristic (Z, C, D, or E curve) specified in the application design. All parts maintain identical electrical ratings, mechanical form factor, and mounting compatibility. Inventory availability ranges from 829 to 1075 units across the substitute group, supporting continuous supply chain flexibility.

Frequently Asked Questions (FAQ)

Q: Can 3C5UM, 3D5UM, or 3E5UM be used as direct replacements for 3Z5UM?

A: Yes, these parts are parametric equivalents with identical electrical ratings (5A, 480V AC, 80V DC), mechanical configuration (3-pole, DIN rail, lever actuation), and approval certifications (CSA, UL508). Substitution is valid when the application permits the alternative thermal-magnetic trip curve.

Q: What is the difference between the Z, C, D, and E character designations?

A: These characters denote distinct thermal-magnetic trip curves that define the breaker's response time to overcurrent conditions. The specific curve required depends on the application's load characteristics and protection requirements. Selection must be based on application engineering specifications.

Q: Do the substitute parts have different approval certifications?

A: All parts carry CSA and UL508 certification. The 3C5UM and 3D5UM additionally include VDE certification. If VDE compliance is required, 3C5UM or 3D5UM are the appropriate selections.

Q: Are all parts ROHS3 compliant?

A: Yes, all four parts (3Z5UM, 3C5UM, 3D5UM, 3E5UM) are ROHS3 compliant and REACH unaffected.

Q: What is the current inventory status for each part?

A: 3Z5UM: 1075 units; 3C5UM: 829 units; 3D5UM: 876 units; 3E5UM: 952 units. All are available as new original stock in bulk packaging.