GRS-4011-0021 Equivalent & Substitute Parts

Part Overview

The GRS-4011-0021 is a rocker switch manufactured by CW Industries, classified as SPST (Single Pole Single Throw) with On-Off functionality. This panel mount, snap-in switch is rated for 16A AC at 125V and features a concave black actuator with O marking. The part is Active status and RoHS3 compliant. Substitute parts become necessary when the primary part reaches end-of-life, inventory constraints occur, or design revisions require alternative component sources while maintaining electrical and mechanical compatibility.

Substiute Parts

GRS-4011-0021

CW IndustriesIn Stock: 849GRS-4011-0021 Datasheet

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R1966ABLKBLKEFYEL

E-SwitchIn Stock: 1049R1966ABLKBLKEFYEL Datasheet

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R1966ABLKBLKEGGRN

E-SwitchIn Stock: 1122R1966ABLKBLKEGGRN Datasheet

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R1966ABLKBLKIF

E-SwitchIn Stock: 1299R1966ABLKBLKIF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GRS-4011-0021 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Circuit configuration: SPST
• Switch function: On-Off
• Voltage rating: 125V AC
• Mounting type: Panel Mount, Snap-In
• Termination style: Quick Connect - 0.187" (4.7mm)

Allowable Variation Parameters:

• Current rating: Substitute parts rated at 15A AC are acceptable for applications requiring 16A AC operation, provided the load does not exceed 15A
• Panel cutout dimensions: Substitute parts with rectangular cutouts of 19.40mm x 13.00mm are compatible with the original 19.20mm x 12.90mm specification due to standard panel mount tolerances
• Operating temperature range: Substitute parts with -30°C to 65°C range are acceptable for applications within this narrower band
• Mechanical and electrical life: Substitute parts with reduced cycle ratings (30,000 mechanical, 10,000 electrical) are acceptable for applications not requiring the original specifications
• Actuator marking and illumination: These are design variations that do not affect core switching functionality

The three E-Switch R1966 series parts meet all mandatory compatibility parameters and fall within allowable variation ranges.

Parameter Comparison

Engineering Selection Recommendations

All three E-Switch R1966 series substitutes are Active status products with RoHS3 compliance, matching the regulatory posture of the GRS-4011-0021. Selection among the three substitutes depends on application-specific requirements:

R1966ABLKBLKIF is the closest functional equivalent to the GRS-4011-0021, offering non-illuminated operation with vertical ON-OFF marking. This part is suitable for applications where illumination is not required and actuator marking is beneficial for user interface clarity.

R1966ABLKBLKEFYEL and R1966ABLKBLKEGGRN incorporate LED illumination (yellow and green respectively) with 2.1-2.2 VDC nominal voltage requirements. These parts are suitable for applications requiring visual status indication. The illumination feature requires additional circuit design considerations for the LED supply voltage.

All three substitutes operate within a narrower temperature range (-30°C to 65°C) compared to the original part (-20°C to 105°C). Applications requiring operation above 65°C or below -30°C are not suitable for these substitutes.

All three substitutes are rated at 15A AC versus the original 16A AC rating. Applications with load currents exceeding 15A are not suitable for these substitutes.

Frequently Asked Questions (FAQ)

Q: Can R1966ABLKBLKIF directly replace GRS-4011-0021 in my application?

A: R1966ABLKBLKIF is mechanically and electrically compatible if your application meets these conditions: load current does not exceed 15A AC, operating temperature remains between -30°C and 65°C, and the reduced mechanical life (30,000 cycles) and electrical life (10,000 cycles) are acceptable for your duty cycle. Panel cutout dimensions differ slightly (19.40mm x 13.00mm versus 19.20mm x 12.90mm), which is within standard panel mount tolerances.

Q: What is the difference between the three E-Switch substitutes?

A: R1966ABLKBLKIF is non-illuminated with vertical ON-OFF marking. R1966ABLKBLKEFYEL features yellow LED illumination at 2.1 VDC. R1966ABLKBLKEGGRN features green LED illumination at 2.2 VDC. All three share identical electrical ratings, mounting specifications, and termination style.

Q: Are the illuminated substitutes (R1966ABLKBLKEFYEL and R1966ABLKBLKEGGRN) compatible with my non-illuminated circuit design?

A: The illuminated parts are mechanically and electrically compatible with non-illuminated circuit designs. The LED illumination feature is optional and does not interfere with basic switch operation. However, if illumination is not required, R1966ABLKBLKIF is the more appropriate selection.

Q: What are the current rating implications of using a 15A substitute in place of a 16A rated part?

A: The substitute is rated for continuous operation at 15A AC. Applications with load currents between 15A and 16A are not suitable for the substitute. Applications with load currents at or below 15A AC are fully compatible.

Q: Do the panel cutout dimension differences affect installation?

A: The substitute parts require panel cutouts of 19.40mm x 13.00mm, compared to the original 19.20mm x 12.90mm. The 0.2mm difference in each dimension is within standard panel mount tolerances and does not affect snap-in installation. Existing panel cutouts for the GRS-4011-0021 will accommodate the R1966 series parts.

Q: What is the impact of reduced mechanical and electrical life ratings?

A: The GRS-4011-0021 is rated for 100,000 mechanical cycles and 25,000 electrical cycles. The R1966 substitutes are rated for 30,000 mechanical cycles and 10,000 electrical cycles. Applications with duty cycles exceeding these limits are not suitable for the substitutes. Applications with lower duty cycles are fully compatible.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three E-Switch R1966 series substitutes are RoHS3 compliant, matching the compliance status of the GRS-4011-0021.