CWSC21JCACS Rocker Switch DPST 9A 125V - Equivalent & Substitute Parts

Part Overview

The CWSC21JCACS is a DPST rocker switch manufactured by NKK Switches, rated for 9A AC at 125V with panel mount, snap-in installation. This component features an illuminated concave actuator with red LED indication and quick connect termination. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and system support applications.

Substiute Parts

CWSC21JCACS

NKK SwitchesIn Stock: 926CWSC21JCACS Datasheet

Current PartRFQ

CWSB21CACF

NKK SwitchesIn Stock: 1310CWSB21CACF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWSC21JCACS is determined by the following critical parameters:

• Electrical Compatibility: Circuit configuration (DPST), current rating (9A AC), and voltage rating (125V AC) must match exactly
• Mechanical Compatibility: Panel cutout dimensions (19.20mm x 12.90mm) and mounting type (Panel Mount, Snap-In) must be identical to ensure physical fit
• Functional Compatibility: Actuator type (Concave - Illuminated) and switch function (On-Off) must be equivalent
• Termination Compatibility: Quick Connect termination style must be present, though connector size variations may require adapter evaluation

The CWSB21CACF meets all critical electrical and mechanical parameters while offering active product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The CWSB21CACF is the primary equivalent substitute for the obsolete CWSC21JCACS. Both components share identical electrical ratings (9A AC, 125V), circuit configuration (DPST), and mechanical mounting specifications (19.20mm x 12.90mm panel cutout, snap-in installation).

Key distinctions between the parts:

Illumination Technology: The CWSC21JCACS uses LED illumination at 1.95 VDC, while the CWSB21CACF uses neon illumination at 125 VAC. This difference affects circuit design considerations for the illumination supply.

Connector Size: The CWSC21JCACS features 0.110" (2.8mm) quick connect terminals, while the CWSB21CACF uses 0.187" (4.7mm) terminals. Harness compatibility must be evaluated based on existing connector specifications.

Operating Temperature Range: The CWSB21CACF provides an extended operating range (-20°C ~ 85°C) compared to the CWSC21JCACS (-10°C ~ 50°C), offering broader environmental suitability.

Regulatory Compliance: The CWSB21CACF holds cULus certification (Canadian and US UL approval) versus UL certification for the original part, providing expanded geographic compliance coverage.

Both components are ROHS3 compliant and feature identical mechanical life (30,000 cycles) and electrical life (10,000 cycles) ratings.

Frequently Asked Questions (FAQ)

Q: Can the CWSB21CACF be used as a direct replacement for the CWSC21JCACS?

A: The CWSB21CACF is electrically and mechanically compatible for the same switching function. However, two integration considerations exist: the illumination voltage differs (1.95 VDC vs. 125 VAC), and the quick connect terminal sizes differ (0.110" vs. 0.187"). These differences require evaluation of your specific circuit design and connector harness specifications.

Q: What is the significance of the different illumination types?

A: The CWSC21JCACS uses LED illumination powered at 1.95 VDC, requiring a separate low-voltage supply. The CWSB21CACF uses neon illumination powered directly from the 125 VAC circuit. This affects circuit design and power supply requirements. LED illumination typically offers longer service life and lower power consumption, while neon illumination integrates directly with AC mains.

Q: Are the panel cutout dimensions identical?

A: Yes. Both the CWSC21JCACS and CWSB21CACF require a rectangular panel cutout of 19.20mm x 12.90mm, ensuring mechanical interchangeability in panel installations.

Q: What connector compatibility issues should I consider?

A: The CWSC21JCACS uses 0.110" (2.8mm) quick connect terminals, while the CWSB21CACF uses 0.187" (4.7mm) terminals. Your existing harness connectors must match the substitute part's terminal size. Adapter solutions or harness modification may be required.

Q: Does the CWSB21CACF offer any performance advantages?

A: The CWSB21CACF provides an extended operating temperature range (-20°C ~ 85°C versus -10°C ~ 50°C) and holds cULus certification for broader regulatory coverage. Both parts maintain identical electrical ratings, mechanical life, and electrical life specifications.

Q: Why is the original CWSC21JCACS obsolete?

A: Product obsolescence is determined by the manufacturer based on market demand and production decisions. The CWSB21CACF represents the active equivalent in NKK Switches' current product portfolio for this switch category.