3D5UM 5A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The 3D5UM is a three-pole thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 5A at 480V AC and 80V DC operation. This DIN rail-mounted device features lever actuation and is certified by CSA, UL508, and VDE standards. The product is currently active in inventory with 876 units in stock. Equivalent substitute parts are necessary to address supply chain continuity, inventory optimization, and application-specific thermal magnetic characteristic requirements within the V-EA series.

Substiute Parts

3D5UM

Altech CorporationIn Stock: 8873D5UM Datasheet

Current PartRFQ

3C5UM

Altech CorporationIn Stock: 8773C5UM Datasheet

Parametric EquivalentRFQ

3E5UM

Altech CorporationIn Stock: 9903E5UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3D5UM is determined by strict equivalence across the following critical parameters:

Current Rating: 5A (exact match required) Voltage Rating - AC: 480V (exact match required) Voltage Rating - DC: 80V (exact match required) Breaker Type: Thermal Magnetic (exact match required) Number of Poles: 3 (exact match required) Mounting Type: DIN Rail (exact match required) Actuator Type: Lever (exact match required) Series: V-EA (exact match required) Manufacturer: Altech Corporation (exact match required)

The substitute parts 3C5UM and 3E5UM meet all critical electrical and mechanical parameters. The primary distinction between these parts lies in their thermal magnetic characteristic designation (D-Char, C-Char, and E-Char respectively), which defines the trip curve behavior under fault conditions. All three parts maintain identical voltage, current, and physical specifications, making them interchangeable within applications where the specific characteristic curve is not a design constraint.

Parameter Comparison

Engineering Selection Recommendations

All three parts—3D5UM, 3C5UM, and 3E5UM—are active products with ROHS3 compliance and current inventory availability. Selection between these substitutes should be based on application-specific thermal magnetic characteristic requirements and certification scope.

The 3D5UM and 3C5UM both carry full CSA, UL508, and VDE certification, providing the broadest regulatory coverage for international applications. The 3E5UM carries CSA and UL508 certification, with VDE certification not listed in the provided specifications.

All parts are manufactured by Altech Corporation within the V-EA series and maintain identical electrical ratings, mechanical dimensions, and DIN rail mounting compatibility. Substitution between these parts is electrically and mechanically valid where application design does not specify a particular thermal magnetic characteristic curve.

Frequently Asked Questions (FAQ)

Q: Can 3C5UM or 3E5UM be used as direct replacements for 3D5UM in existing installations?

A: Yes, both 3C5UM and 3E5UM are direct electrical and mechanical substitutes for 3D5UM. All three parts share identical voltage ratings (480V AC, 80V DC), current rating (5A), pole configuration (3-pole), mounting type (DIN Rail), and actuator type (Lever). The primary difference is the thermal magnetic characteristic designation, which defines trip curve behavior. Substitution is valid where the application does not require a specific characteristic curve.

Q: What is the difference between D-Char, C-Char, and E-Char designations?

A: These designations refer to the thermal magnetic trip curve characteristics of the breaker. Each characteristic defines the relationship between fault current magnitude and trip time. The specific characteristic required depends on the application's load profile and protection requirements. All three characteristics are available within the 5A, 480V AC, 80V DC, 3-pole V-EA series.

Q: Are there any certification differences between these parts?

A: The 3D5UM and 3C5UM carry CSA, UL508, and VDE certifications. The 3E5UM carries CSA and UL508 certifications. For applications requiring VDE certification, 3D5UM or 3C5UM are the appropriate selections.

Q: What inventory levels are available for each substitute part?

A: Current inventory levels are 876 units for 3D5UM, 829 units for 3C5UM, and 952 units for 3E5UM. All parts are in stock as new original components.

Q: Are these parts compatible with the same DIN rail mounting systems?

A: Yes. All three parts are DIN rail-mounted devices with identical mechanical specifications and mounting compatibility. No additional hardware or modifications are required for substitution.