ASD33K20N Equivalent & Substitute Parts

Part Overview

The ASD33K20N is a keylock switch manufactured by IDEC, designed for panel-mounted applications requiring three-position, dual-pole single-throw (DPST-NO) switching functionality. This component is rated for 10A at 110 VAC and 8A at 24 VDC, with a momentary-off-momentary switch function and silver contact material. The product is currently obsolete, making identification of suitable substitute components essential for system maintenance, repair, and redesign applications.

Substiute Parts

ASD33K20N

IDECIn Stock: 1201ASD33K20N Datasheet

Current PartRFQ

ASD33K20NU

IDECIn Stock: 1063ASD33K20NU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASD33K20N is determined by strict alignment of electrical and mechanical parameters. The following criteria establish compatibility:

Electrical Parameters:

• Circuit configuration must remain DPST-NO
• Number of positions must be 3
• Switch function must be Mom-Off-Mom
• Current ratings must meet or exceed 10A (AC) and 8A (DC)
• Voltage ratings must support 110V AC and 24V DC operation

Mechanical Parameters:

• Actuator type must be flat key
• Mounting type must be panel mount
• Termination style must be screw terminal
• Panel cutout dimensions must be circular 30.50mm diameter
• Depth behind flange must be 53.00mm

Compliance Parameters:

• RoHS3 compliance required
• MSL rating of 1 (Unlimited) required

The substitute part ASD33K20NU meets all specified electrical and mechanical parameters while maintaining active product status and full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The ASD33K20NU is the direct substitute for the obsolete ASD33K20N. Both components are manufactured by IDEC and maintain identical electrical specifications, mechanical dimensions, and contact characteristics. The ASD33K20NU carries active product status, ensuring ongoing availability and supply chain continuity. Both parts maintain ROHS3 compliance and MSL rating of 1 (Unlimited), confirming equivalent regulatory standing and environmental stability. Selection of the ASD33K20NU eliminates obsolescence risk while preserving all functional and dimensional compatibility with existing panel-mount installations.

Frequently Asked Questions (FAQ)

Q: Can the ASD33K20NU be used as a direct replacement for the ASD33K20N?

A: Yes. The ASD33K20NU maintains identical electrical ratings (10A AC, 8A DC), voltage specifications (110V AC, 24V DC), circuit configuration (DPST-NO), switch function (Mom-Off-Mom), mechanical dimensions (30.50mm circular cutout, 53.00mm depth), and contact material (silver). Both components are panel-mount with screw terminals and operate across the same temperature range (-25°C to 50°C).

Q: What is the primary advantage of switching from ASD33K20N to ASD33K20NU?

A: The ASD33K20N is obsolete, while the ASD33K20NU maintains active product status. This ensures continued availability, supply chain reliability, and manufacturer support for new installations and replacements.

Q: Are there packaging differences between these parts?

A: The ASD33K20N is supplied with standard packaging, while the ASD33K20NU is supplied in bulk packaging. Both maintain identical component specifications and performance characteristics.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the ASD33K20N and ASD33K20NU are ROHS3 compliant with MSL rating of 1 (Unlimited), confirming equivalent environmental and moisture sensitivity standards.

Q: What are the critical parameters for substitution compatibility?

A: Substitution compatibility is determined by circuit configuration (DPST-NO), number of positions (3), switch function (Mom-Off-Mom), current ratings (10A AC, 8A DC), voltage ratings (110V AC, 24V DC), actuator type (flat key), mounting type (panel mount), termination style (screw terminal), and panel cutout dimensions (circular 30.50mm diameter).