TE Connectivity ALCOSWITCH 1478620-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 1478620-4 is a snap-action switch with SPST-NO (Single Pole Single Throw - Normally Open) circuit configuration, rated for 16A at 125V AC. This component features a straight lever actuator with chassis mount termination using quick connect 0.250" (6.3mm) terminals. The switch is designed for off-momentary operation with an operating temperature range of -20°C to 130°C.

This part is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this switch configuration.

Substiute Parts

1478620-4

TE Connectivity ALCOSWITCH SwitchesIn Stock: 8701478620-4 Datasheet

Current PartRFQ

LS0851503F040C1C

E-SwitchIn Stock: 1063LS0851503F040C1C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity ALCOSWITCH 1478620-4 is evaluated based on the following critical parameters that must align for functional equivalence:

Primary Compatibility Criteria:

• Circuit configuration (SPST-NO)
• Switch function (Off-Mom momentary operation)
• Voltage rating (125V AC minimum)
• Current rating (16A AC or higher)
• Actuator type (Lever, Straight)
• Mounting type (Chassis Mount)
• Termination style compatibility

Secondary Consideration Parameters:

• Operating temperature range
• Electrical and mechanical life ratings
• Product status and compliance certifications

The E-Switch LS0851503F040C1C meets the primary circuit and functional requirements as a SPST-NO momentary switch with chassis mount configuration. However, specific parameter variations exist that must be evaluated for application suitability.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The E-Switch LS0851503F040C1C provides functional equivalence for SPST-NO momentary switch applications at 125V AC. The substitute maintains identical circuit configuration, switch function, voltage rating, actuator type, and mounting type as the original TE Connectivity 1478620-4.

Critical Differences Requiring Evaluation:

1. Current Rating Reduction: The substitute is rated for 15A AC compared to the original 16A AC. Applications operating at or near 16A require verification that 15A rating is acceptable for the intended load.

2. Termination Connector Size: The substitute uses 0.187" (4.7mm) quick connect terminals versus the original 0.250" (6.3mm). Wiring harness and connector compatibility must be confirmed before substitution.

3. Operating Force: The substitute requires 40gf actuation force compared to 90gf for the original. Applications with specific actuation force requirements must account for this 55% reduction.

4. Temperature Range: The substitute operates to 85°C maximum versus 130°C for the original. Applications requiring operation above 85°C cannot use this substitute.

5. Electrical and Mechanical Life: The substitute provides 50,000 electrical cycles and 1,000,000 mechanical cycles compared to 100,000 and 10,000,000 respectively for the original. High-cycle applications must verify the substitute meets durability requirements.

6. Product Status and Compliance: The E-Switch LS0851503F040C1C is an active product with ROHS3 compliance, ensuring ongoing availability and regulatory alignment for new designs or production continuity.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch LS0851503F040C1C directly replace the TE Connectivity 1478620-4 without modifications?

A: Direct replacement without modifications is not possible due to termination connector size differences. The original uses 0.250" (6.3mm) quick connect terminals while the substitute uses 0.187" (4.7mm) terminals. Wiring harness and connector modifications are required.

Q: What is the impact of the 1A current rating reduction?

A: The substitute is rated for 15A AC versus the original 16A AC. For applications operating at 16A, the substitute does not meet the original specification. For applications operating below 15A, the substitute is acceptable.

Q: Are there mechanical differences that affect installation?

A: The substitute has a slightly lower operating position (0.602" versus 0.606") and greater pretravel (0.335" versus 0.296"). These differences are minor but may affect mechanical clearances or actuation feel in the application. The operating force is also significantly lower (40gf versus 90gf), which may impact user interface feel.

Q: Can this substitute be used in high-temperature applications?

A: No. The substitute operates to a maximum of 85°C, while the original operates to 130°C. Applications requiring operation above 85°C must use the original part or identify an alternative substitute with higher temperature rating.

Q: What is the significance of the electrical and mechanical life differences?

A: The substitute provides 50,000 electrical cycles and 1,000,000 mechanical cycles compared to 100,000 and 10,000,000 for the original. Applications with high cycle counts must verify the substitute meets expected service life requirements.

Q: Is the E-Switch LS0851503F040C1C compliant with current regulations?

A: Yes. The substitute is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The original part status is not specified for RoHS compliance.

Q: What packaging is available for the substitute?

A: The E-Switch LS0851503F040C1C is available in bulk packaging, with 972 pieces currently in stock as new original inventory.