3Z30UM 30A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 3Z30UM is a three-pole thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 30A at 480V AC and 60V DC. This DIN rail-mounted breaker features a lever actuator and is part of the V-EA series. The product is active and widely stocked (991 units in inventory), with full compliance to CSA and UL508 standards. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical mounting specifications, and regulatory certifications to ensure direct interchangeability in applications requiring 30A thermal magnetic protection.

Substiute Parts

3Z30UM

Altech CorporationIn Stock: 10163Z30UM Datasheet

Current PartRFQ

3B30UM

Altech CorporationIn Stock: 8473B30UM Datasheet

Parametric EquivalentRFQ

3C30UM

Altech CorporationIn Stock: 11603C30UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3Z30UM are identified based on strict parametric equivalence within the V-EA series. The substitution logic is based on the following critical parameters that must remain constant:

• Current Rating: 30A
• Voltage Rating - AC: 480V
• Voltage Rating - DC: 60V
• Breaker Type: Thermal Magnetic
• Number of Poles: 3
• Mounting Type: DIN Rail
• Actuator Type: Lever
• Series: V-EA
• Approval Agencies: CSA, UL508

The substitute parts 3B30UM and 3C30UM match all these parameters. The primary difference between these parts lies in their thermal-magnetic characteristic curves (indicated by the B and C designations), which define their trip response profiles. All three parts maintain identical electrical ratings, mechanical mounting specifications, and regulatory certifications, making them interchangeable for applications where the specific characteristic curve is not a design constraint.

Parameter Comparison

Engineering Selection Recommendations

All three parts—3Z30UM, 3B30UM, and 3C30UM—are active products with full CSA and UL508 certifications, ensuring compliance with applicable electrical standards. Selection between these parts should be based on application-specific requirements for thermal-magnetic trip characteristics, as indicated by the Z, B, and C designations. All parts maintain identical electrical ratings (30A, 480V AC, 60V DC), mechanical mounting (DIN rail, lever actuator, three poles), and regulatory compliance status. Inventory availability is adequate across all three options, with 3C30UM showing the highest stock level at 1130 units.

Frequently Asked Questions (FAQ)

Q: Can 3B30UM and 3C30UM be used interchangeably with 3Z30UM?

A: Yes, from an electrical and mechanical standpoint. All three parts share identical current ratings (30A), voltage ratings (480V AC, 60V DC), mounting type (DIN rail), pole configuration (3-pole), and regulatory certifications (CSA, UL508). The primary difference is the thermal-magnetic characteristic curve, which affects trip response timing. Selection should be based on whether the application requires a specific characteristic curve.

Q: What is the difference between Z, B, and C characteristic designations?

A: These letters indicate different thermal-magnetic trip curves within the V-EA series. The specific trip response profiles differ between these designations, affecting how quickly the breaker responds to overcurrent conditions. The choice between them depends on the load characteristics and protection requirements of the application.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts—3Z30UM, 3B30UM, and 3C30UM—are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

Q: What is the packaging format for these parts?

A: All three parts are supplied in bulk packaging, suitable for direct installation on DIN rail systems.

Q: Are there any differences in approval certifications between these parts?

A: No. All three parts carry identical CSA and UL508 certifications, ensuring equivalent regulatory compliance for use in North American electrical systems.