3C63UM Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The 3C63UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 63A at 480V AC and 60V DC. This DIN rail-mounted breaker features a lever actuator and three poles, designed for industrial electrical distribution applications. The product is currently active and in stock with 1029 units available. Finding equivalent substitute parts is necessary to ensure supply chain flexibility, manage inventory across multiple suppliers, and maintain operational continuity in applications where the primary part may experience supply constraints.

Substiute Parts

3C63UM

Altech CorporationIn Stock: 10623C63UM Datasheet

Current PartRFQ

3G63UM

Altech CorporationIn Stock: 8733G63UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3G63UM qualifies as a parametric equivalent to the 3C63UM based on matching electrical and mechanical specifications. Both parts share identical ratings across all critical parameters: 63A current rating, 480V AC and 60V DC voltage ratings, three-pole configuration, DIN rail mounting, lever actuation, and thermal magnetic operation. Both are manufactured by Altech Corporation within the V-EA series and carry UL508 approval. The substitution is valid because the core functional requirements—current interruption capacity, voltage withstand capability, and physical form factor—are identical between the two parts. The difference in part designation (C character versus G character) reflects internal manufacturer classification but does not alter the electrical or mechanical performance characteristics that determine interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Both the 3C63UM and 3G63UM are active products with full regulatory compliance. The 3C63UM maintains higher current inventory at 1029 units, while the 3G63UM has 790 units available. Selection between these parts should be based on immediate availability requirements and supply chain logistics. Both parts meet UL508 approval standards and are ROHS3 compliant, making them suitable for applications requiring environmental and safety certifications. The identical electrical ratings and mechanical specifications ensure direct functional interchangeability in any application designed for either part number.

Frequently Asked Questions (FAQ)

Q: Can the 3G63UM replace the 3C63UM in existing installations? A: Yes. Both parts are identical in current rating (63A), voltage ratings (480V AC, 60V DC), pole configuration (3-pole), mounting method (DIN rail), and actuator type (lever). They are direct functional equivalents.

Q: What is the difference between the C and G character designations? A: The character designation reflects internal Altech Corporation classification but does not affect electrical performance, mechanical compatibility, or operational characteristics. Both parts perform identically in circuit protection applications.

Q: Are both parts UL508 approved? A: Yes. Both the 3C63UM and 3G63UM carry UL508 approval, meeting industrial control equipment standards.

Q: Do both parts comply with environmental regulations? A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental compliance requirements.

Q: Which part should I select based on availability? A: The 3C63UM has higher inventory (1029 units) compared to the 3G63UM (790 units). Selection should prioritize your immediate supply requirements and lead time constraints.

Q: Are there any mechanical differences between these parts? A: No. Both parts are identical in mounting type (DIN rail), actuator type (lever), and physical form factor. They occupy the same space and connect identically in panel installations.