3D63UM 63A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 3D63UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 63A at 480V AC and 60V DC. This DIN rail-mounted device features a lever actuator and three poles, designed for industrial electrical distribution applications. The product is currently active in production with full UL508 approval and ROHS3 compliance. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component replacement, inventory management, or supply chain continuity.

Substiute Parts

3D63UM

Altech CorporationIn Stock: 8943D63UM 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 3D63UM based on the following matching criteria:

Current Rating: Both parts are rated for 63A operation, ensuring identical load-carrying capacity.

Voltage Specifications: Both maintain 480V AC and 60V DC ratings, allowing direct substitution in equivalent circuit configurations.

Breaker Technology: Both employ thermal magnetic trip mechanisms, providing identical protection characteristics.

Electrical Configuration: Both feature three poles with lever actuation, maintaining identical circuit control functionality.

Mounting and Mechanical Interface: Both are DIN rail-mounted devices with identical form factors and installation requirements.

Regulatory Compliance: Both carry UL508 approval and ROHS3 compliance certification.

Series Designation: Both belong to the V-EA series, confirming design family compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the 3D63UM and 3G63UM are active production components with identical electrical ratings, mechanical configurations, and regulatory certifications. Selection between these parts is based on availability and inventory status rather than technical differentiation. The 3D63UM maintains 815 units in stock, while the 3G63UM has 790 units available. Both parts satisfy UL508 industrial control requirements and ROHS3 environmental compliance mandates. The choice between these equivalents does not affect circuit performance, protection characteristics, or system reliability when applied within their specified electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can the 3G63UM directly replace the 3D63UM in an existing installation?

A: Yes. Both parts share identical current ratings (63A), voltage specifications (480V AC / 60V DC), pole configuration (3-pole), and DIN rail mounting interface. No circuit modifications or recalibration is required.

Q: What distinguishes the 3D63UM from the 3G63UM?

A: The parts differ only in their base product designations (3D63 versus 3G63). All electrical parameters, mechanical specifications, and regulatory certifications are identical. The designation difference does not affect functional performance or compatibility.

Q: Are both parts UL508 certified?

A: Yes. Both the 3D63UM and 3G63UM carry UL508 approval for industrial control applications and meet ROHS3 environmental compliance requirements.

Q: What is the significance of the thermal magnetic breaker type?

A: Thermal magnetic operation provides dual protection: thermal elements respond to sustained overload conditions, while magnetic elements provide instantaneous protection against short-circuit faults. Both substitute parts employ identical trip mechanisms.

Q: Can these parts be used interchangeably in 480V AC circuits?

A: Yes. Both parts are rated for 480V AC operation and are mechanically and electrically interchangeable within this voltage specification.

Q: What packaging format is supplied?

A: Both parts are supplied in bulk packaging suitable for industrial procurement and installation workflows.