Altech Corporation 2D40UM Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The 2D40UM is a thermal magnetic circuit breaker manufactured by Altech Corporation, rated for 40A at 480V AC and 60V DC. This 2-pole DIN rail-mounted device is part of the V-EA series and holds Active product status with full UL508 and CSA approval. Circuit breakers of this specification are essential components in industrial control systems, motor protection circuits, and distribution panels where reliable overcurrent and short-circuit protection is required. Substitute parts become necessary when the primary model is unavailable, when inventory constraints exist, or when system design requires alternative trip characteristics within the same electrical and mechanical parameters.

Substiute Parts

2D40UM

Altech CorporationIn Stock: 12092D40UM Datasheet

Current PartRFQ

2B40UM

Altech CorporationIn Stock: 8452B40UM Datasheet

Parametric EquivalentRFQ

2E40UM

Altech CorporationIn Stock: 9702E40UM Datasheet

Parametric EquivalentRFQ

2G40UM

Altech CorporationIn Stock: 11172G40UM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 2D40UM circuit breaker has three parametric equivalents within the Altech V-EA series: 2B40UM, 2E40UM, and 2G40UM. These substitutes are qualified based on identical electrical and mechanical parameters:

All substitute parts share the following critical parameters with the 2D40UM:

• Current Rating: 40A
• Voltage Rating: 480V AC / 60V DC
• Number of Poles: 2
• Breaker Type: Thermal Magnetic
• Mounting Type: DIN Rail
• Actuator Type: Lever
• Series: V-EA
• Approval Agencies: CSA, UL508
• RoHS Compliance: ROHS3 Compliant

The primary distinction between these models lies in their trip characteristic designations (B, D, E, and G channels), which define the thermal-magnetic response curve. Within the V-EA series architecture, these designations represent different trip point configurations while maintaining identical voltage, current, and mechanical specifications. This allows direct substitution in applications where the specific trip characteristic is not a design-critical parameter.

Parameter Comparison

Engineering Selection Recommendations

All four circuit breaker models (2D40UM, 2B40UM, 2E40UM, 2G40UM) maintain Active product status with identical regulatory compliance certifications (UL508 and CSA approval). Each model is ROHS3 compliant and carries equivalent electrical and mechanical specifications. Selection among these substitutes should be based on availability and application-specific trip characteristic requirements. All models are suitable for direct replacement in 40A, 480V AC / 60V DC, 2-pole DIN rail installations where thermal-magnetic protection is specified.

Frequently Asked Questions (FAQ)

Q: Can 2B40UM, 2E40UM, and 2G40UM be used interchangeably with 2D40UM?

A: Yes, within the constraints of identical electrical parameters. All four models share the same current rating (40A), voltage ratings (480V AC / 60V DC), pole configuration (2-pole), mounting type (DIN rail), and regulatory approvals. The primary difference is the trip characteristic designation, which defines the thermal-magnetic response curve. Substitution is valid when the specific trip characteristic is not a design-critical requirement.

Q: What determines whether a substitute part is acceptable?

A: Substitution eligibility is determined by matching the following parameters: current rating, AC voltage rating, DC voltage rating, number of poles, breaker type (thermal magnetic), mounting type (DIN rail), actuator type (lever), and regulatory approval status. All substitute parts in this list meet these criteria.

Q: Are there any compliance or certification differences between these models?

A: No. All four models carry identical approval designations (CSA and UL508), identical RoHS compliance status (ROHS3 Compliant), and identical product status (Active). There are no compliance or certification barriers to substitution.

Q: What is the significance of the trip characteristic designation (B, D, E, G)?

A: The trip characteristic designation defines the thermal-magnetic response curve of the circuit breaker. These designations represent different trip point configurations within the V-EA series. The specific characteristic should be selected based on the application's inrush current tolerance and protection requirements.

Q: Is packaging identical across all substitute models?

A: Yes. All models are supplied in Bulk packaging, consistent with industrial distribution standards for DIN rail-mounted circuit breakers.