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TE Connectivity ALCOSWITCH 1478618-1 Equivalent & Substitute Parts
Part Overview
The TE Connectivity ALCOSWITCH 1478618-1 is a snap-action switch with SPST-NO (Single Pole Single Throw - Normally Open) circuit configuration, rated for 16A at 125V AC. This switch features a round pin plunger actuator, chassis mount installation, and quick connect 0.250" (6.3mm) termination. The component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing applications and new designs requiring similar electrical and mechanical characteristics.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 1478618-1 |
| Manufacturer | TE Connectivity ALCOSWITCH Switches |
| Circuit Configuration | SPST-NO |
| Switch Function | Off-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 TE Connectivity 1478618-1 is determined by the following critical parameters: circuit configuration (SPST-NO), switch function (Off-Mom), actuator type (round pin plunger), mounting type (chassis mount), and termination style (quick connect 0.250"). Current and voltage ratings establish the electrical operating envelope. Substitute parts must maintain compatibility across these core parameters while accommodating variations in current capacity, voltage rating, and operating temperature range based on application requirements.
The substitute parts identified are Honeywell Sensing and Productivity Solutions V7 series switches, which share identical circuit topology, actuator design, mounting configuration, and termination compatibility. Substitution is valid when the substitute part's current and voltage ratings meet or exceed the application requirements of the original 1478618-1 specification.
Parameter Comparison
| Parameter | 1478618-1 | V7-1C28E9 | V7-1K20E9 | V7-1V20E9-000-1 | V7-1X2AD9C2 | V7-1Z29E9 | V7-2B29D8 |
|---|---|---|---|---|---|---|---|
| Manufacturer | TE Connectivity | Honeywell | Honeywell | Honeywell | Honeywell | Honeywell | Honeywell |
| Circuit | SPST-NO | SPST-NO | SPST-NO | SPST-NO | SPST-NO | SPST-NO | SPST-NO |
| Switch Function | Off-Mom | Off-Mom | Off-Mom | Off-Mom | Off-Mom | Off-Mom | Off-Mom |
| Current Rating (AC) | 16A | 15A | 22A | 21A | 6A | 25A | 11A |
| Voltage Rating (AC) | 125V | 125V | 125V | 125V | 125V | 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" | Quick Connect - 0.250" | Quick Connect - 0.250" | Quick Connect - 0.250" | Quick Connect - 0.250" | Quick Connect - 0.250" | Quick Connect - 0.187" |
| Operating Temperature | -20°C to 130°C | -40°C to 85°C | -40°C to 85°C | -40°C to 85°C | -40°C to 85°C | -40°C to 85°C | -40°C to 85°C |
| Electrical Life | 100,000 Cycles | 100,000 Cycles | 100,000 Cycles | 100,000 Cycles | Not Specified | 100,000 Cycles | 100,000 Cycles |
| Mechanical Life | 10,000,000 Cycles | 10,000,000 Cycles | 10,000,000 Cycles | 10,000,000 Cycles | 10,000,000 Cycles | 10,000,000 Cycles | 10,000,000 Cycles |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active |
| RoHS Status | Not Specified | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
Engineering Selection Recommendations
Primary Substitutes for 125V AC Applications:
The V7-1C28E9 (15A, 125V) and V7-1K20E9 (22A, 125V) are the most direct substitutes for the 1478618-1. Both parts maintain identical circuit configuration, actuator type, mounting method, and termination style. The V7-1C28E9 operates at 15A, which is within 1A of the original 16A rating and is suitable for applications where the load current does not exceed 15A. The V7-1K20E9 provides increased current capacity at 22A, accommodating higher load requirements while maintaining 125V AC voltage compatibility. Both substitute parts are active products with RoHS compliance and extended operating temperature ranges (-40°C to 85°C).
The V7-1V20E9-000-1 (21A, 125V) offers an intermediate current rating between the original specification and higher-capacity alternatives, with identical mechanical and electrical life specifications.
Lower Current Applications:
The V7-1X2AD9C2 (6A, 125V) is suitable for applications requiring reduced current capacity. This part maintains the same actuator, mounting, and termination characteristics but operates at 6A AC. The V7-2B29D8 (11A, 125V) provides an intermediate current rating with 0.187" (4.7mm) quick connect termination, requiring connector compatibility verification.
Higher Voltage Applications:
The V7-1Z29E9 (25A, 277V) is specified for 277V AC applications and is not a direct substitute for 125V AC circuits. This part is included in the substitute list due to its presence in the original 1478618-1 substitute reference but requires voltage compatibility confirmation before selection.
Compliance and Availability:
All Honeywell V7 series substitutes are active products with RoHS compliance certification. The original 1478618-1 is obsolete; therefore, substitution with active Honeywell alternatives ensures continued component availability and regulatory compliance for new production and field replacements.
Frequently Asked Questions (FAQ)
Q: Can the V7-1C28E9 directly replace the 1478618-1 in all applications?
A: The V7-1C28E9 is a direct mechanical and electrical substitute for applications where the load current does not exceed 15A at 125V AC. The 1A reduction in current rating from the original 16A specification must be evaluated against actual circuit requirements. Both parts share identical SPST-NO circuit topology, round pin plunger actuator, chassis mount configuration, and 0.250" quick connect termination.
Q: What is the difference between the V7-1K20E9 and V7-1V20E9-000-1?
A: Both parts are rated for 125V AC operation with current ratings of 22A and 21A respectively. The V7-1K20E9 provides higher current capacity and is suitable for applications requiring maximum load handling. Both parts maintain identical mechanical characteristics, operating temperature range (-40°C to 85°C), and termination style. Selection between these parts depends on specific circuit current requirements.
Q: Why is the V7-2B29D8 listed as a substitute if it has a different termination size?
A: The V7-2B29D8 features 0.187" (4.7mm) quick connect termination, differing from the original 1478618-1 and most V7 series substitutes which use 0.250" (6.3mm) termination. This part is included in the substitute list but requires connector compatibility verification before implementation. The mechanical and electrical characteristics are otherwise compatible.
Q: Is the V7-1Z29E9 suitable for 125V AC applications?
A: The V7-1Z29E9 is rated for 277V AC operation and is not a direct substitute for 125V AC circuits. This part is included in the substitute reference list but requires voltage compatibility confirmation. Using a 277V-rated switch in a 125V circuit is not a substitution; it represents a different voltage class.
Q: What is the operating temperature limitation when substituting with Honeywell V7 series parts?
A: The original 1478618-1 operates from -20°C to 130°C. Honeywell V7 series substitutes operate from -40°C to 85°C, with the exception of V7-1Z23E9 which extends to 150°C. Applications requiring operation above 85°C may not be compatible with standard V7 series substitutes. The V7-1Z23E9 (277V rated) extends the upper temperature limit to 150°C but is not suitable for 125V AC applications.
Q: Are all Honeywell V7 series substitutes RoHS compliant?
A: All Honeywell V7 series parts listed as substitutes are RoHS compliant. The original TE Connectivity 1478618-1 does not specify RoHS status. Substitution with RoHS-compliant alternatives ensures regulatory compliance for new designs and manufacturing processes subject to RoHS requirements.
Q: What is the electrical life specification for the V7-1X2AD9C2?
A: The V7-1X2AD9C2 electrical life specification is not provided in the available data. This part maintains 10,000,000 mechanical life cycles, consistent with other V7 series substitutes. Applications requiring specific electrical life cycle guarantees should reference the complete manufacturer datasheet for this part number.
Q: Can the 1478618-1 be used interchangeably with V7-1C27D8-000-1?
A: The V7-1C27D8-000-1 (15A, 125V) is mechanically compatible but features 0.187" (4.7mm) quick connect termination, differing from the 1478618-1 which uses 0.250" (6.3mm) termination. Connector compatibility must be verified before implementation. The electrical characteristics (15A at 125V) are within acceptable range for most applications originally designed for 16A operation.
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