3C40UM 40A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 3C40UM is a three-pole thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 40A at 480V AC and 60V DC with lever actuation and DIN rail mounting. This component is classified as Active product status with full ROHS3 compliance and UL508 approval. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the V-EA series, enabling direct replacement in applications requiring identical performance specifications.

Key Parameters

Parameter	Specification
Current Rating	40A
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

Substitute Part Grouping Explanation

Substitute parts for the 3C40UM are qualified based on identical electrical and mechanical parameters: 40A current rating, 480V AC / 60V DC voltage ratings, three-pole thermal magnetic operation, lever actuation, and DIN rail mounting within the V-EA series. The substitute parts 3B40UM, 3E40UM, and 3Z40UM maintain all critical performance parameters, differing only in trip characteristic designation (B, C, E, and Z channels). All substitutes are manufactured by Altech Corporation and share the same packaging format (Bulk) and series classification.

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage AC	Voltage DC	Breaker Type	Poles	Mounting	Actuator	Series	Status
3C40UM	Altech Corporation	40A	480V	60V	Thermal Magnetic	3	DIN Rail	Lever	V-EA	Active
3B40UM	Altech Corporation	40A	480V	60V	Thermal Magnetic	3	DIN Rail	Lever	V-EA	Active
3E40UM	Altech Corporation	40A	480V	60V	Thermal Magnetic	3	DIN Rail	Lever	V-EA	Active
3Z40UM	Altech Corporation	40A	480V	60V	Thermal Magnetic	3	DIN Rail	Lever	V-EA	Active

Engineering Selection Recommendations

All four parts (3C40UM, 3B40UM, 3E40UM, 3Z40UM) are Active status components with ROHS3 compliance. The 3C40UM carries UL508 approval, while 3B40UM, 3E40UM, and 3Z40UM carry dual CSA and UL508 approvals. Selection between these parts is determined by application-specific trip characteristic requirements. All parts are manufactured by Altech Corporation within the V-EA series and maintain identical electrical and mechanical specifications for 40A three-pole DIN rail circuit breaker applications.

Frequently Asked Questions (FAQ)

Q: Can 3B40UM, 3E40UM, or 3Z40UM be used as direct replacements for 3C40UM? A: Yes. All four parts share identical current rating (40A), voltage ratings (480V AC / 60V DC), pole configuration (3-pole), mounting type (DIN Rail), and actuator type (Lever). Substitution is valid when trip characteristic differences do not affect circuit protection requirements.

Q: What is the difference between the C, B, E, and Z designations? A: These designations indicate trip characteristic channels within the V-EA series. The electrical and mechanical parameters remain constant across all four variants.

Q: Are all substitute parts available in the same packaging? A: Yes. All parts are supplied in Bulk packaging format.

Q: Do all substitute parts carry the same certifications? A: The 3C40UM carries UL508 approval. The substitute parts 3B40UM, 3E40UM, and 3Z40UM carry both CSA and UL508 approvals, providing additional certification coverage.

Q: Are there any RoHS or REACH compliance differences? A: No. All parts maintain ROHS3 compliance and REACH Unaffected status.

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