3D1UM Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The 3D1UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 1A at 480V AC / 80V DC with D-characteristic trip curve and lever actuator. This component is mounted on DIN rail and is currently in active production status with full inventory availability. Substitute parts are identified based on matching electrical ratings, mechanical compatibility, and regulatory approvals to ensure direct functional equivalence in applications requiring thermal magnetic protection.

Substiute Parts

3D1UM

Altech CorporationIn Stock: 9323D1UM Datasheet

Current PartRFQ

3C1UM

Altech CorporationIn Stock: 11443C1UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3C1UM qualifies as a parametric equivalent to the 3D1UM based on the following matching criteria:

• Current Rating: 1A (identical)
• Voltage Rating - AC: 480V (identical)
• Voltage Rating - DC: 80V (identical)
• Breaker Type: Thermal Magnetic (identical)
• Number of Poles: 3 (identical)
• Mounting Type: DIN Rail (identical)
• Actuator Type: Lever (identical)
• Series: V-EA (identical)
• Approval Agencies: CSA, UL508, VDE (identical)
• RoHS Status: ROHS3 Compliant (identical)
• REACH Status: REACH Unaffected (identical)

The primary distinction between these parts is the trip characteristic curve: 3D1UM features D-characteristic while 3C1UM features C-characteristic. Both are thermal magnetic breakers within the same product family and voltage/current class, differing only in their trip response profile.

Parameter Comparison

Engineering Selection Recommendations

Both the 3D1UM and 3C1UM are active production components with full regulatory compliance across CSA, UL508, and VDE standards. Selection between these parts depends on the required trip characteristic curve for the application:

• 3D1UM (D-characteristic): Suitable for applications requiring delayed trip response, typically used in circuits with moderate inrush currents or motor protection scenarios.
• 3C1UM (C-characteristic): Suitable for applications requiring faster trip response, typically used in general lighting and distribution circuits with lower inrush current tolerance.

Both parts maintain identical electrical ratings (1A, 480V AC, 80V DC), mechanical compatibility (DIN rail mounting, 3-pole lever actuator), and regulatory approvals. Component selection should be based on the specific trip curve requirement of the protected circuit.

Frequently Asked Questions (FAQ)

Q: Can 3C1UM replace 3D1UM in any application? A: Direct replacement is possible only if the application circuit can tolerate the C-characteristic trip curve instead of D-characteristic. The electrical ratings and mechanical interfaces are identical; however, trip response timing differs between the two curves.

Q: Are both parts currently available? A: Yes. The 3D1UM has 828 units in stock and the 3C1UM has 1122 units in stock as new original components.

Q: Do both parts meet the same regulatory standards? A: Yes. Both the 3D1UM and 3C1UM carry identical approvals: CSA, UL508, and VDE. Both are ROHS3 compliant and REACH unaffected.

Q: What is the difference between D-characteristic and C-characteristic? A: The characteristic designation refers to the trip curve profile. D-characteristic provides delayed response suitable for circuits with higher inrush currents. C-characteristic provides faster response suitable for circuits with lower inrush current tolerance. Both are thermal magnetic breakers with identical voltage and current ratings.

Q: Are there any packaging differences between these parts? A: Both parts are supplied in bulk packaging and are mounted identically on DIN rail with lever actuators. No packaging or mechanical interface differences exist.