TE Connectivity ALCOSWITCH 1478618-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 1478618-3 is a snap-action SPST-NO (Single Pole Single Throw - Normally Open) switch rated for 16A at 125V AC with chassis mount configuration and quick connect 0.250" (6.3mm) termination. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

1478618-3

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11501478618-3 Datasheet

Current PartRFQ

LS0851502F045C2C

E-SwitchIn Stock: 1196LS0851502F045C2C Datasheet

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LS0851502F075C1C

E-SwitchIn Stock: 1084LS0851502F075C1C Datasheet

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LS0851502F075C2C

E-SwitchIn Stock: 723LS0851502F075C2C Datasheet

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V7-1C28E9-022

Honeywell Sensing and Productivity SolutionsIn Stock: 1135V7-1C28E9-022 Datasheet

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V7-2B27D8-022

Honeywell Sensing and Productivity SolutionsIn Stock: 926V7-2B27D8-022 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 1478618-3 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom (Momentary)
• Voltage rating: 125V AC minimum
• Mounting type: Chassis Mount
• Termination style: Quick Connect connector type and size
• Actuator type: Lever, Straight

Secondary Compatibility Criteria:

• Current rating: Minimum 15A AC (substitute parts rated 15A or higher are acceptable for 16A applications)
• Operating temperature range: Minimum -20°C to 85°C overlap
• Electrical life: Minimum 50,000 cycles

The substitute parts identified maintain the core SPST-NO momentary switch function with 125V AC rating and chassis mount configuration. Current ratings of 15A on substitute parts are acceptable for applications originally specified at 16A, provided system design accounts for the reduced margin. Termination style variations (0.187" vs. 0.250" quick connect) require mechanical verification for connector compatibility.

Parameter Comparison

Engineering Selection Recommendations

E-Switch LS Series (LS0851502F045C2C, LS0851502F075C1C, LS0851502F075C2C):

These parts are active products with ROHS3 compliance. All three maintain SPST-NO momentary function at 125V AC with 15A current rating. Selection between these variants depends on termination connector size and operating force requirements. LS0851502F045C2C and LS0851502F075C2C feature 0.250" (6.3mm) quick connect termination matching the original part. LS0851502F075C1C uses 0.187" (4.7mm) termination and requires connector compatibility verification. Electrical life of 50,000 cycles is half that of the original specification; mechanical life of 1,000,000 cycles is one-tenth the original. These parts are suitable for applications where reduced cycle life is acceptable.

Honeywell V7 Series (V7-1C28E9-022, V7-2B27D8-022):

Both V7 series parts are active products with RoHS compliance and maintain electrical life of 100,000 cycles and mechanical life of 10,000,000 cycles, matching the original part specifications. V7-1C28E9-022 provides 15A AC rating with 0.250" (6.3mm) quick connect termination, directly compatible with the original connector interface. V7-2B27D8-022 provides 11A AC rating with 0.187" (4.7mm) quick connect termination; the reduced current rating and different termination style require application-specific evaluation.

Preferred Substitutes:

For direct replacement with minimal design modification: V7-1C28E9-022 (Honeywell) provides equivalent electrical life, mechanical life, and termination compatibility.

For cost-optimized alternatives with acceptable cycle life reduction: LS0851502F045C2C or LS0851502F075C2C (E-Switch) with 0.250" (6.3mm) termination matching.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch LS0851502 series parts directly replace the TE Connectivity 1478618-3?

A: E-Switch LS series parts maintain SPST-NO momentary function, 125V AC rating, chassis mount configuration, and 0.250" (6.3mm) quick connect termination. However, electrical life is reduced from 100,000 to 50,000 cycles, and mechanical life is reduced from 10,000,000 to 1,000,000 cycles. Direct replacement is possible where reduced cycle life is acceptable for the application.

Q: What is the difference between LS0851502F045C2C and LS0851502F075C2C?

A: Both parts share identical electrical specifications (15A, 125V AC, SPST-NO) and termination style (0.250" quick connect). The primary difference is operating force: LS0851502F045C2C requires 45gf with 20gf release force, while LS0851502F075C2C requires 75gf with 25gf release force. Selection depends on actuator force requirements for the application.

Q: Why do the Honeywell V7 series parts have different current ratings?

A: V7-1C28E9-022 is rated 15A AC, while V7-2B27D8-022 is rated 11A AC. These represent different switch designs within the V7 series. For applications requiring 16A capacity, V7-1C28E9-022 is the appropriate selection.

Q: Can I use LS0851502F075C1C or V7-2B27D8-022 with their 0.187" (4.7mm) termination?

A: These parts feature 0.187" (4.7mm) quick connect termination, differing from the original 0.250" (6.3mm) specification. Substitution requires verification that the circuit board or connector interface accommodates the smaller terminal size. Mechanical compatibility must be confirmed before implementation.

Q: What is the impact of the reduced operating temperature range on E-Switch parts?

A: E-Switch LS series parts operate from -25°C to 85°C, compared to the original -20°C to 130°C range. The upper temperature limit is reduced by 45°C. Applications requiring operation above 85°C are not suitable for E-Switch substitutes. Honeywell V7 series parts operate to -40°C to 85°C, also with an 85°C upper limit.

Q: Are all substitute parts RoHS compliant?

A: Yes. E-Switch LS series parts are ROHS3 compliant. Honeywell V7 series parts are RoHS compliant. All substitute parts meet current environmental compliance requirements.

Q: Which substitute part most closely matches the original 1478618-3 specifications?

A: V7-1C28E9-022 (Honeywell) provides the closest match: 15A AC rating (acceptable for 16A applications), 125V AC, SPST-NO momentary function, 0.250" (6.3mm) quick connect termination, 100,000 cycle electrical life, and 10,000,000 cycle mechanical life. The primary trade-off is reduced maximum operating temperature (85°C vs. 130°C).