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TE Connectivity ALCOSWITCH 1478614-1 Equivalent & Substitute Parts
Part Overview
The TE Connectivity ALCOSWITCH 1478614-1 is a snap-action switch with SPST-NC (Single Pole Single Throw - Normally Closed) circuit configuration, rated for 16A at 125V AC. This component features a round pin plunger actuator, chassis mount installation, and quick connect 0.250" (6.3mm) termination. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing applications and new designs.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 1478614-1 |
| Manufacturer | TE Connectivity ALCOSWITCH Switches |
| Circuit Configuration | SPST-NC |
| Switch Function | On-Mom (Momentary) |
| Current Rating (AC) | 16A |
| Voltage Rating (AC) | 125V |
| Actuator Type | Round (Pin Plunger) |
| Mounting Type | Chassis Mount |
| Termination Style | Quick Connect - 0.250" (6.3mm) |
| Operating Temperature Range | -20°C to 130°C |
| Electrical Life | 100,000 Cycles |
| Mechanical Life | 10,000,000 Cycles |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the 1478614-1 is determined by compatibility across the following critical parameters: circuit configuration (SPST-NC), switch function (On-Mom), actuator type (round pin plunger), mounting type (chassis mount), and electrical ratings (current and voltage). Substitute parts must maintain the same circuit topology and actuator interface to ensure mechanical and electrical compatibility within the application.
Substitutes are grouped into two categories based on electrical rating alignment:
Category 1: Direct Electrical Rating Match (16A, 125V) Parts meeting or exceeding the original 16A at 125V specification with compatible termination and mechanical characteristics.
Category 2: Higher Electrical Rating (15A-25A, 125V-277V) Parts with elevated current or voltage ratings suitable for applications where the original specification can be met by a higher-rated component, provided mechanical and termination compatibility is maintained.
The following parameters determine substitution validity: current rating (must equal or exceed 16A for 125V applications), voltage rating (must equal or exceed 125V), circuit configuration (must be SPST-NC), actuator type (must be round pin plunger), mounting type (must be chassis mount), and termination style compatibility.
Parameter Comparison
| Parameter | 1478614-1 (Main) | V7-1B37D8 | V7-1C37D8 | V15T22-EC200 | V7-1Y39E9 | V7-1Z39E9 | LS0851500F250C1B |
|---|---|---|---|---|---|---|---|
| Manufacturer | TE Connectivity | Honeywell | Honeywell | Honeywell | Honeywell | Honeywell | E-Switch |
| Circuit | SPST-NC | SPST-NC | SPST-NC | SPST-NC | SPST-NC | SPST-NC | SPST-NC |
| Switch Function | On-Mom | On-Mom | On-Mom | On-Mom | On-Mom | On-Mom | On-Mom |
| Current Rating (AC) | 16A | 11A | 15A | 22A | 20A | 25A | 15A |
| Voltage Rating (AC) | 125V | 125V | 125V | 250V | 277V | 277V | 125V |
| Actuator Type | Round (Pin Plunger) | Round (Pin Plunger) | Round (Pin Plunger) | Round (Pin Plunger) | Round (Pin Plunger) | Round (Pin Plunger) | Round (Pin Plunger) |
| Mounting Type | Chassis Mount | Chassis Mount | Chassis Mount | Chassis Mount | Chassis Mount | Chassis Mount | Chassis Mount |
| Termination Style | Quick Connect - 0.250" (6.3mm) | Quick Connect - 0.187" (4.7mm) | Quick Connect - 0.187" (4.7mm) | Quick Connect - 0.187" (4.7mm) | Quick Connect - 0.250" (6.3mm) | Quick Connect - 0.250" (6.3mm) | Quick Connect - 0.187" (4.7mm) |
| Operating Temperature Range | -20°C to 130°C | -40°C to 85°C | -40°C to 85°C | -25°C to 125°C | -40°C to 85°C | -40°C to 85°C | -25°C to 85°C |
| Electrical Life | 100,000 Cycles | 100,000 Cycles | 100,000 Cycles | 10,000 Cycles | 100,000 Cycles | 100,000 Cycles | 50,000 Cycles |
| Mechanical Life | 10,000,000 Cycles | 10,000,000 Cycles | 10,000,000 Cycles | 5,000,000 Cycles | 10,000,000 Cycles | 10,000,000 Cycles | 1,000,000 Cycles |
| Product Status | Obsolete | Active | Active | Active | Active | Obsolete | Active |
| RoHS Status | Not Specified | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes for 125V, 16A Applications:
The V7-1C37D8 (Honeywell, Active status) provides the closest functional match with 15A at 125V rating. While the current rating is 1A below the original specification, this part maintains SPST-NC circuit configuration, on-momentary function, round pin plunger actuator, and chassis mount installation. The termination style differs (0.187" vs. 0.250"), requiring connector interface verification. This part carries RoHS compliance and demonstrates 100,000 electrical cycles with 10,000,000 mechanical cycles, matching the original electrical life specification.
The V15T22-EC200 (Honeywell, Active status) offers elevated electrical ratings at 22A and 250V, providing margin above the original 16A at 125V specification. This part is suitable for applications where higher voltage or current capacity is acceptable. Termination style is 0.187" (4.7mm), requiring interface adaptation. RoHS compliance and 100,000 electrical cycles are specified.
Alternative for 125V Applications with Reduced Current Requirements:
The V7-1B37D8 (Honeywell, Active status) is rated for 11A at 125V with 500mA DC capability. This part is applicable only where the application current demand does not exceed 11A. It provides active product status, RoHS compliance, and equivalent mechanical life specifications.
Termination Compatibility Consideration:
The original 1478614-1 uses 0.250" (6.3mm) quick connect termination. Substitutes V7-1Y39E9 and V7-1Z39E9 maintain this termination size. Parts V7-1B37D8, V7-1C37D8, V15T22-EC200, and LS0851500F250C1B use 0.187" (4.7mm) termination, requiring connector or wiring interface modification.
Product Status Alignment:
Active-status substitutes (V7-1B37D8, V7-1C37D8, V15T22-EC200, V7-1Y39E9, LS0851500F250C1B) are recommended for new designs and ongoing procurement. Obsolete-status alternatives (V7-1Z39E9) are available for legacy system maintenance only.
Frequently Asked Questions (FAQ)
Q: Can the V7-1C37D8 directly replace the 1478614-1 in a 16A application?
A: The V7-1C37D8 is rated for 15A at 125V, which is 1A below the original 16A specification. Direct substitution is valid only if the application current demand does not exceed 15A. Termination style differs (0.187" vs. 0.250"), requiring connector interface verification or modification.
Q: What is the significance of the termination style difference between 0.250" and 0.187"?
A: Termination style specifies the quick connect tab dimensions. The 0.250" (6.3mm) tabs on the original part are physically larger than the 0.187" (4.7mm) tabs on most substitutes. Direct mechanical substitution requires compatible connector receptacles. Wiring harness or connector modification may be necessary.
Q: Is the V15T22-EC200 suitable for a 125V, 16A application?
A: Yes. The V15T22-EC200 is rated for 22A at 250V, which exceeds the original 16A at 125V requirement. This part is electrically compatible and provides operational margin. Termination style is 0.187" (4.7mm), requiring interface verification.
Q: Why do some substitutes have lower electrical life ratings?
A: Electrical life varies by design and application class. The LS0851500F250C1B specifies 50,000 cycles versus the original 100,000 cycles. This difference reflects different switch design and contact material specifications. Selection should align with the application's expected cycle count over product lifetime.
Q: Are all substitute parts RoHS compliant?
A: All active-status substitutes listed (V7-1B37D8, V7-1C37D8, V15T22-EC200, V7-1Y39E9, LS0851500F250C1B) carry RoHS or ROHS3 compliance certification. The original 1478614-1 does not specify RoHS status. Compliance verification is required for applications subject to RoHS regulations.
Q: What is the operating temperature range consideration for substitution?
A: The original 1478614-1 operates from -20°C to 130°C. Most Honeywell V7 series substitutes operate from -40°C to 85°C, providing lower temperature capability but reduced upper temperature limit. The V15T22-EC200 operates to 125°C, approaching the original upper limit. Application temperature requirements must be verified against substitute specifications.
Q: Can the V7-1Y39E9 or V7-1Z39E9 be used in a 125V application?
A: These parts are rated for 277V AC, not 125V. While they maintain 0.250" (6.3mm) termination compatibility, they are designed for higher voltage systems. Use in 125V applications is not recommended as the parts are over-specified for voltage and represent unnecessary cost.
Q: What is the difference between the V7-1Z39E9 and V7-1Y39E9?
A: Both parts are rated for 277V AC with 0.250" (6.3mm) termination. The V7-1Z39E9 is rated for 25A with 225gf operating force and is obsolete. The V7-1Y39E9 is rated for 20A with 65-125gf operating force and is active. For new designs, the V7-1Y39E9 is preferred due to active product status.
Q: Is the LS0851500F250C1B from E-Switch a viable substitute?
A: The LS0851500F250C1B is rated for 15A at 125V with SPST-NC configuration and round pin plunger actuator. It is active status and ROHS3 compliant. Termination is 0.187" (4.7mm), requiring interface modification. Mechanical life is 1,000,000 cycles versus the original 10,000,000 cycles, which may be limiting for high-cycle applications.
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