3Z1UM 1A Circuit Breaker Z Char3 - Equivalent & Substitute Parts

Part Overview

The 3Z1UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 1A at 480V AC / 80V DC with a 3-pole lever-actuated design for DIN rail mounting. This component is classified as Active product status and is ROHS3 compliant with CSA and UL508 approvals. Substitute parts become necessary when the Z characteristic curve is not available from inventory, when alternative thermal-magnetic response curves better suit application requirements, or when sourcing from alternative stock locations is required.

Substiute Parts

3Z1UM

Altech CorporationIn Stock: 9823Z1UM Datasheet

Current PartRFQ

3C1UM

Altech CorporationIn Stock: 11443C1UM Datasheet

Parametric EquivalentRFQ

3D1UM

Altech CorporationIn Stock: 9323D1UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3Z1UM circuit breaker can be substituted with the 3C1UM and 3D1UM models based on the following criteria:

Substitution Parameters (Must Match):

• Current Rating: 1A
• Voltage Rating - AC: 480V
• Voltage Rating - DC: 80V
• Number of Poles: 3
• Mounting Type: DIN Rail
• Breaker Type: Thermal Magnetic
• Actuator Type: Lever
• Series: V-EA
• Manufacturer: Altech Corporation

Variable Parameter (Differentiates Models):

• Characteristic Curve: Z (3Z1UM), C (3C1UM), D (3D1UM)

The characteristic curve designation indicates the thermal-magnetic response profile of the breaker. All three models share identical electrical and mechanical specifications, with the only distinction being the trip characteristic curve. This allows direct substitution when the specific characteristic curve requirement can be accommodated by alternative models.

Parameter Comparison

Engineering Selection Recommendations

All three models—3Z1UM, 3C1UM, and 3D1UM—maintain Active product status and are ROHS3 compliant. The 3C1UM and 3D1UM provide additional VDE approval certification beyond the CSA and UL508 approvals present on the 3Z1UM. Selection between these models should be based on application-specific requirements for the characteristic curve (Z, C, or D) and regional compliance requirements. All models are suitable for direct substitution within the V-EA series when electrical and mechanical parameters align with system specifications.

Frequently Asked Questions (FAQ)

Q: Can the 3C1UM directly replace the 3Z1UM in an existing installation?

A: Direct replacement is possible if the application does not require the Z characteristic curve specifically. The 3C1UM shares all electrical ratings (1A, 480V AC, 80V DC), mechanical configuration (3-pole, DIN rail, lever actuator), and compliance certifications. The only difference is the thermal-magnetic response curve.

Q: What is the significance of the characteristic curve designation (Z, C, D)?

A: The characteristic curve defines the thermal-magnetic trip response profile of the breaker. Different curves provide different sensitivity to overcurrent conditions. Selection must align with the protected circuit's requirements.

Q: Are there any packaging or inventory considerations when selecting a substitute?

A: All three models are supplied in Bulk packaging. Current inventory levels are: 3Z1UM (969 Pcs), 3C1UM (1122 Pcs), and 3D1UM (828 Pcs). Availability may influence selection when immediate sourcing is required.

Q: Do the substitute parts have different approval certifications?

A: The 3Z1UM carries CSA and UL508 approvals. The 3C1UM and 3D1UM carry CSA, UL508, and VDE approvals. Applications requiring VDE certification should specify the 3C1UM or 3D1UM.

Q: Are all models in the same product series?

A: Yes, all three models belong to the Altech Corporation V-EA series and share the same base design platform with identical electrical and mechanical specifications.