CWSC11JFAFS Rocker Switch - Equivalent & Substitute Parts

Part Overview

The CWSC11JFAFS is a panel-mount rocker switch manufactured by NKK Switches, configured as a single-pole single-throw (SPST) device rated for 9A at 125V AC. The switch features an illuminated concave actuator with LED green indication and quick-connect termination. This part is currently obsolete, making equivalent and substitute parts necessary for ongoing maintenance, repair, and new design applications requiring compatible switching functionality.

Substiute Parts

CWSC11JFAFS

NKK SwitchesIn Stock: 727CWSC11JFAFS Datasheet

Current PartRFQ

CWSB21FAFF

NKK SwitchesIn Stock: 1189CWSB21FAFF Datasheet

SimilarRFQ

JWS11RAAF

NKK SwitchesIn Stock: 1020JWS11RAAF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWSC11JFAFS is determined by the following critical parameters:

Primary Compatibility Criteria:

• Panel cutout dimensions (19.20mm x 12.90mm rectangular)
• Mounting type (Panel Mount, Snap-In)
• Voltage rating (125V AC minimum)
• Current rating (9A AC or higher)
• Switch function (On-Off operation)
• Illumination requirement (LED green preferred for direct replacement)

Substitution Logic:

The CWSC11JFAFS can be substituted by parts that maintain identical or superior electrical ratings, compatible mechanical mounting, and matching panel cutout geometry. Circuit configuration (SPST vs. DPST) and termination connector type represent design trade-offs that may be acceptable depending on application requirements.

Parameter Comparison

Engineering Selection Recommendations

CWSB21FAFF Selection Criteria:

The CWSB21FAFF is an active-status substitute offering identical current and voltage ratings (9A, 125V AC) with matching panel cutout dimensions and mounting configuration. The primary design difference is circuit configuration (DPST vs. SPST), which provides dual-pole switching capability. The neon illumination operates at 125V AC, eliminating the need for separate low-voltage LED power supply. The larger 0.187" (4.7mm) quick-connect termination requires connector adaptation. This substitute is suitable for applications where dual-pole switching is acceptable or beneficial, and where neon illumination is compatible with system design.

JWS11RAAF Selection Criteria:

The JWS11RAAF maintains SPST circuit configuration and LED green illumination matching the original design. However, the current rating is reduced to 6A AC, making this substitute suitable only for applications with maximum load current not exceeding 6A. The operating temperature range extends to -25°C, providing enhanced low-temperature performance. Termination includes both solder and quick-connect options (0.187" / 4.7mm), offering installation flexibility. Dust-proof ingress protection and expanded approval agencies (CSA, UL, VDE) provide additional environmental and regulatory coverage. This substitute is appropriate for lower-current applications requiring LED illumination and extended temperature performance.

Frequently Asked Questions (FAQ)

Q: Can CWSB21FAFF directly replace CWSC11JFAFS without circuit modification?

A: CWSB21FAFF has identical electrical ratings and panel cutout dimensions but uses DPST (dual-pole) configuration instead of SPST (single-pole). Direct mechanical substitution is possible; however, the dual-pole switching behavior differs from the original single-pole design. Connector termination size differs (0.187" vs. 0.110"), requiring adapter consideration. Neon illumination operates at 125V AC rather than 2.1V DC LED, eliminating separate power supply requirements but changing indicator characteristics.

Q: Is JWS11RAAF suitable for all CWSC11JFAFS applications?

A: JWS11RAAF maintains SPST configuration and LED illumination compatibility but has reduced current rating (6A vs. 9A). This substitute is suitable only for applications where maximum load current does not exceed 6A AC. Panel cutout dimensions and mounting type are identical. Termination connector size differs (0.187" vs. 0.110"), requiring adapter consideration. Extended operating temperature range (-25°C to 50°C) provides improved low-temperature performance compared to the original (-10°C to 50°C).

Q: What are the termination connector differences between these parts?

A: CWSC11JFAFS uses 0.110" (2.8mm) quick-connect termination. Both CWSB21FAFF and JWS11RAAF use 0.187" (4.7mm) quick-connect termination. These connector sizes are not directly compatible; wiring harness or connector adapter modification is required for substitution. JWS11RAAF additionally offers solder termination as an alternative connection method.

Q: What illumination differences exist between the substitutes?

A: CWSC11JFAFS uses LED green illumination at 2.1V DC, requiring separate low-voltage power supply. CWSB21FAFF uses neon green illumination at 125V AC, operating directly from the main AC supply without additional power conditioning. JWS11RAAF uses LED green illumination at 2.1V DC, matching the original design. Illumination type selection depends on available power supply architecture and indicator brightness/response requirements.

Q: Are all three parts RoHS and REACH compliant?

A: Yes. CWSC11JFAFS, CWSB21FAFF, and JWS11RAAF are all ROHS3 compliant and REACH unaffected. All parts carry EAR99 export classification and identical HTSUS code (8536.50.9065).

Q: What approval agencies certify each part?

A: CWSC11JFAFS carries UL approval. CWSB21FAFF carries cULus approval (combined Canadian and US certification). JWS11RAAF carries CSA, UL, and VDE approvals, providing the broadest regulatory coverage. Selection depends on geographic market and certification requirements.