CWSC21JDADS Rocker Switch DPST 9A 125V - Equivalent & Substitute Parts

Part Overview

The CWSC21JDADS is a panel-mount rocker switch manufactured by NKK Switches, configured as a DPST (Double Pole Single Throw) on-off switch rated for 9A AC at 125V. This model features an illuminated concave actuator with amber LED indication and quick-connect termination. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and component replacement in existing installations.

Substiute Parts

CWSC21JDADS

NKK SwitchesIn Stock: 700CWSC21JDADS Datasheet

Current PartRFQ

CWSB21DADF

NKK SwitchesIn Stock: 998CWSB21DADF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWSC21JDADS is determined by the following critical parameters:

• Circuit Configuration: Must be DPST to maintain dual-pole switching functionality
• Current and Voltage Ratings: Must support minimum 9A AC at 125V
• Mounting Type: Must be panel mount, snap-in to fit existing panel cutouts
• Panel Cutout Dimensions: Must match 19.20mm x 12.90mm rectangular opening
• Actuator Type: Must be illuminated concave rocker to maintain user interface consistency
• Termination Style: Quick-connect terminals must be compatible with existing wiring harnesses

The CWSB21DADF qualifies as a functional substitute based on matching all critical parameters. Differences in illumination technology (neon vs. LED) and illumination voltage do not prevent substitution, as both provide amber indication and operate within the same panel cutout dimensions.

Parameter Comparison

Engineering Selection Recommendations

The CWSB21DADF is the designated substitute for the obsolete CWSC21JDADS. Both components are manufactured by NKK Switches and maintain identical electrical ratings, circuit configuration, and mechanical mounting specifications. The CWSB21DADF holds active product status with cULus certification, providing ongoing manufacturer support and availability.

Key considerations for selection:

• Termination Compatibility: The CWSB21DADF uses 0.187" (4.7mm) quick-connect terminals versus 0.110" (2.8mm) on the original part. Wiring harness adaptation may be required.
• Illumination Technology: The substitute employs neon illumination at 125VAC instead of LED at 2VDC. Power supply routing must be verified for compatibility with existing control circuits.
• Temperature Range: The CWSB21DADF supports extended operating temperature range (-20°C to 85°C) compared to the original (-10°C to 50°C), providing broader environmental compatibility.
• Regulatory Compliance: Both parts meet ROHS3 compliance. The substitute's cULus certification covers both UL and CSA standards.

Frequently Asked Questions (FAQ)

Q: Can the CWSB21DADF directly replace the CWSC21JDADS without modifications?

A: The CWSB21DADF matches all critical electrical and mechanical parameters. However, the termination connector size differs (0.187" vs. 0.110"), requiring harness adapter evaluation or rewiring of quick-connect terminals.

Q: What is the difference between LED and neon illumination in these switches?

A: The CWSC21JDADS uses LED illumination powered at 2VDC, while the CWSB21DADF uses neon illumination powered at 125VAC. Both provide amber indication. The substitute requires connection to the AC power supply rather than a separate low-voltage DC source.

Q: Are the panel cutout dimensions identical?

A: Yes. Both the CWSC21JDADS and CWSB21DADF require a rectangular panel opening of 19.20mm x 12.90mm, ensuring mechanical compatibility with existing panel installations.

Q: Does the CWSB21DADF meet the same electrical ratings?

A: Yes. Both switches are rated for 9A AC at 125V in DPST configuration with identical mechanical and electrical life specifications (30,000 mechanical cycles, 10,000 electrical cycles).

Q: What certifications apply to the substitute part?

A: The CWSB21DADF carries cULus certification, which encompasses both UL and CSA (Canadian Standards Association) approval. The original CWSC21JDADS held UL certification only.