TE Connectivity ALCOSWITCH 1478618-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 1478618-4 is a snap-action SPST-NO (Single Pole Single Throw - Normally Open) switch rated for 16A at 125V AC with chassis mount configuration and straight lever actuator. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this switch architecture.

Substiute Parts

1478618-4

TE Connectivity ALCOSWITCH SwitchesIn Stock: 7771478618-4 Datasheet

Current PartRFQ

LS0851503F040C1C

E-SwitchIn Stock: 1063LS0851503F040C1C Datasheet

SimilarRFQ

V7-2B29E9-048

Honeywell Sensing and Productivity SolutionsIn Stock: 997V7-2B29E9-048 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity ALCOSWITCH 1478618-4 are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

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

Secondary Compatibility Considerations:

• Current rating: Substitute parts must meet or exceed the application current requirement
• Operating temperature range: Substitute parts must cover the required operating environment
• Electrical and mechanical life cycles: Substitute parts must satisfy application duty cycle requirements

The identified substitute parts maintain the core SPST-NO snap-action switch architecture with straight lever actuation and chassis mount configuration. Variations in current ratings, operating force characteristics, and temperature ranges reflect different product lines from alternative manufacturers while preserving functional equivalence for the primary switching application.

Parameter Comparison

Engineering Selection Recommendations

LS0851503F040C1C (E-Switch LS Series)

This substitute is suitable for applications where current requirements do not exceed 15A at 125V AC. The part maintains SPST-NO configuration with straight lever actuation and chassis mount compatibility. The E-Switch LS0851503F040C1C is classified as active product status with RoHS3 compliance. Operating temperature range is limited to -25°C to 85°C, which restricts use in high-temperature environments exceeding 85°C. Electrical life of 50,000 cycles and mechanical life of 1,000,000 cycles are lower than the original part, requiring evaluation against specific application duty cycles. Termination connector size differs at 0.187" (4.7mm) versus the original 0.250" (6.3mm), necessitating connector compatibility verification.

V7-2B29E9-048 (Honeywell V7 Series)

This substitute is suitable for applications where current requirements do not exceed 11A at 125V AC. The part maintains SPST-NO configuration with straight lever actuation and chassis mount compatibility. The Honeywell V7-2B29E9-048 is classified as active product status with RoHS compliance. Operating temperature range extends to -40°C to 85°C, providing broader low-temperature capability than the original part. Electrical life of 100,000 cycles matches the original specification. Mechanical life of 10,000,000 cycles matches the original specification. Termination connector size matches the original at 0.250" (6.3mm), providing direct connector compatibility. This part supports both AC (11A @ 125V) and DC (500mA @ 125V) operation.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch LS0851503F040C1C be used as a direct replacement for the TE Connectivity 1478618-4?

A: The E-Switch LS0851503F040C1C maintains functional equivalence for SPST-NO momentary switch applications with straight lever actuation and chassis mount configuration. However, three factors require evaluation: (1) Current rating is reduced from 16A to 15A, limiting use to applications drawing 15A or less; (2) Operating temperature range is limited to -25°C to 85°C, restricting use in environments exceeding 85°C; (3) Termination connector size differs at 0.187" (4.7mm), requiring connector compatibility verification with existing wiring harnesses.

Q: Can the Honeywell V7-2B29E9-048 be used as a direct replacement for the TE Connectivity 1478618-4?

A: The Honeywell V7-2B29E9-048 maintains functional equivalence for SPST-NO momentary switch applications with straight lever actuation and chassis mount configuration. Current rating is reduced from 16A to 11A, limiting use to applications drawing 11A or less. Termination connector size matches the original at 0.250" (6.3mm), providing direct connector compatibility. Operating temperature range extends to -40°C to 85°C, which is lower than the original maximum of 130°C but covers broader low-temperature operation.

Q: What is the primary difference between the two substitute parts?

A: The Honeywell V7-2B29E9-048 provides better connector compatibility with matching 0.250" (6.3mm) termination style and equivalent electrical and mechanical life cycles. The E-Switch LS0851503F040C1C offers higher current capacity at 15A versus Honeywell's 11A, but features different connector size and lower cycle life ratings.

Q: Are both substitute parts compliant with environmental regulations?

A: The E-Switch LS0851503F040C1C is RoHS3 compliant. The Honeywell V7-2B29E9-048 is RoHS compliant. Both parts are classified as REACH Unaffected. Regulatory compliance status should be verified against specific application requirements and regional standards.

Q: What mechanical and electrical life cycle differences exist between the original and substitute parts?

A: The original TE Connectivity 1478618-4 specifies 100,000 electrical cycles and 10,000,000 mechanical cycles. The Honeywell V7-2B29E9-048 matches both specifications. The E-Switch LS0851503F040C1C provides 50,000 electrical cycles and 1,000,000 mechanical cycles, representing significant reductions that require evaluation against application duty cycle requirements.

Q: Does the operating force difference affect switch performance?

A: Operating force values differ across the three parts: TE Connectivity at 30gf, E-Switch at 40gf, and Honeywell at 23gf. These variations reflect different mechanical designs and may affect user actuation feel and force requirements. Release force values also vary: TE Connectivity at 5.000gf, E-Switch at 15gf, and Honeywell at 1.000gf. Application-specific ergonomic and mechanical requirements should be evaluated against these specifications.