ASD31K40N Equivalent & Substitute Parts

Part Overview

The ASD31K40N is a keylock switch manufactured by IDEC, featuring a 3-position, 4PST-NO configuration with a rated capacity of 10A (AC) and 8A (DC) at 110 VAC / 24 VDC. This component is designed for panel-mount applications requiring secure key-operated switching with On-Off-Mom and Off-Off-Mom functionality. The part is currently obsolete, making identification of compatible substitute components essential for system maintenance, repair, and replacement applications.

Substiute Parts

ASD31K40N

IDECIn Stock: 860ASD31K40N Datasheet

Current PartRFQ

ASD31K40NU

IDECIn Stock: 811ASD31K40NU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASD31K40N is based on electrical and mechanical compatibility within the IDEC keylock switch product family. The critical parameters determining substitutability are:

• Circuit configuration (4PST-NO)
• Number of positions (3)
• Current and voltage ratings (10A AC / 8A DC at 110V AC / 24V DC)
• Actuator type (Flat Key)
• Mounting interface (Panel Mount, Screw Terminal)
• Panel cutout dimensions (Circular 30.50mm Dia)
• Depth behind flange (76.00mm)
• Environmental compliance (ROHS3, IP54)

The ASD31K40NU is identified as a direct substitute within the IDEC ASD31 base product family. This substitute maintains the core electrical specifications and mechanical form factor required for direct replacement in existing panel installations.

Parameter Comparison

Engineering Selection Recommendations

The ASD31K40NU is the designated substitute for the obsolete ASD31K40N. Selection of this substitute is supported by:

• Active product status, ensuring ongoing availability and manufacturing support
• ROHS3 compliance, maintaining regulatory alignment with the original component
• MSL 1 rating, confirming compatibility with standard handling and storage procedures
• Membership in the same IDEC ASD31 base product family, indicating design continuity and mechanical compatibility

The transition from ASD31K40N to ASD31K40NU does not require circuit redesign or panel modification, as the substitute maintains the same mounting interface and electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can the ASD31K40NU be used as a direct replacement for the ASD31K40N?

A: Yes. Both components share the same base product number (ASD31) and are designed for identical panel-mount applications. The ASD31K40NU is the active production equivalent of the obsolete ASD31K40N.

Q: What are the key compatibility criteria for this substitution?

A: Compatibility is determined by circuit configuration (4PST-NO), position count (3), current/voltage ratings (10A AC / 8A DC at 110V AC / 24V DC), panel cutout dimensions (30.50mm circular), and depth behind flange (76.00mm).

Q: Does the ASD31K40NU require any panel modifications?

A: No. The substitute maintains the same mechanical form factor and mounting interface as the original ASD31K40N, eliminating the need for panel cutout or installation modifications.

Q: What is the difference in packaging between these parts?

A: The ASD31K40N was supplied with unspecified packaging, while the ASD31K40NU is supplied in bulk packaging. This does not affect functional compatibility or performance.

Q: Are both parts compliant with current environmental standards?

A: Yes. Both the ASD31K40N and ASD31K40NU are ROHS3 compliant and carry MSL 1 ratings, confirming compliance with current environmental and handling standards.