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TE Connectivity ALCOSWITCH 1478608-3 Equivalent & Substitute Parts
Part Overview
The TE Connectivity ALCOSWITCH 1478608-3 is a snap action SPDT switch rated for 16A at 125V AC with a straight lever actuator and chassis mount configuration. This component features quick connect 0.250" (6.3mm) termination and is designed for on-momentary switch function applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 1478608-3 |
| Manufacturer | TE Connectivity ALCOSWITCH Switches |
| Circuit Configuration | SPDT |
| Switch Function | On-Mom |
| Current Rating | 16A (AC) |
| Voltage Rating - AC | 125V |
| Actuator Type | Lever, Straight |
| Mounting Type | Chassis Mount |
| Termination Style | Quick Connect - 0.250" (6.3mm) |
| Operating Force | 180gf |
| Release Force | 30gf |
| Operating Position | 0.606" (15.4mm) |
| Operating Temperature Range | -20°C ~ 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 1478608-3 is determined by the following critical parameters:
Primary Compatibility Criteria:
- Circuit configuration (SPDT)
- Switch function (On-Mom)
- Current rating (16A AC minimum)
- Voltage rating (125V AC minimum)
- Actuator type (Lever, Straight)
- Mounting type (Chassis Mount)
- Termination style (Quick Connect - 0.250" / 6.3mm)
Secondary Compatibility Considerations:
- Operating force and release force characteristics
- Operating position and travel specifications
- Operating temperature range
- Electrical and mechanical life ratings
Substitute parts are grouped into two categories:
Category 1: Direct Electrical Equivalents (16A @ 125V AC) Parts meeting or exceeding the primary electrical specifications with matching termination style and actuator configuration. These include E-Switch LS0851502F120C1A, APEM Inc. MAB104G01C04B01A, and Honeywell V15H16-CZ100A02-K and V15H16-CZ300A02-K.
Category 2: Higher Voltage Rated Equivalents (16A @ 250V AC) Parts exceeding the voltage specification while maintaining current rating and mechanical compatibility. These include Honeywell V15T16-CZ100A02-K, V15T16-DZ200A02, and V15T16-EZ100A06. These parts provide enhanced voltage margin for applications requiring higher dielectric strength.
Category 3: Reduced Current Rating Alternatives (15A @ 125V AC) E-Switch LS0851502 series parts rated for 15A at 125V AC. These parts are suitable for applications where the full 16A rating is not required and provide active product status with modern compliance certifications.
Category 4: Low Voltage Signal Switching (0.4VA @ 20V AC/DC) E-Switch LS085R102F075C1A for applications requiring signal-level switching rather than power switching.
Parameter Comparison
| Parameter | 1478608-3 (Main) | LS0851502F120C1A | MAB104G01C04B01A | V15H16-CZ100A02-K | V15H16-CZ300A02-K | V15T16-CZ100A02-K | V15T16-DZ200A02 | V15T16-EZ100A06 |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | TE Connectivity | E-Switch | APEM Inc. | Honeywell | Honeywell | Honeywell | Honeywell | Honeywell |
| Circuit | SPDT | SPDT | SPDT | SPDT | SPDT | SPDT | SPDT | SPDT |
| Switch Function | On-Mom | On-Mom | On-Mom | On-Mom | On-Mom | On-Mom | On-Mom | On-Mom |
| Current Rating (AC) | 16A | 15A | 16A | 16A | 16A | 16A | 16A | 16A |
| Voltage Rating (AC) | 125V | 125V | 125V | 250V | 250V | 250V | 250V | 250V |
| Actuator Type | Lever, Straight | Lever, Straight | Lever, Straight | Lever, Straight | Lever, Straight | Lever, Straight | Lever, Straight | Lever, Roller |
| Mounting Type | Chassis Mount | 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 - 0.250" (6.3mm) | Quick Connect - 0.250" (6.3mm) | Quick Connect - 0.250" (6.3mm) | Quick Connect - 0.250" (6.3mm) | Quick Connect - 0.187" (4.7mm) | Quick Connect - 0.187" (4.7mm) |
| Operating Force | 180gf | 120gf | 163gf | 60gf | 180gf | 60gf | 130gf | 60gf |
| Release Force | 30gf | 40gf | Not Specified | 10gf | 30gf | 10gf | 35gf | 10gf |
| Operating Position | 0.606" (15.4mm) | 0.610" (15.5mm) | 0.640" (16.3mm) | 0.602" (15.3mm) | 0.602" (15.3mm) | 0.602" (15.3mm) | 0.602" (15.3mm) | 0.812" (20.6mm) |
| Operating Temperature | -20°C ~ 130°C | -25°C ~ 85°C | -10°C ~ 105°C | -25°C ~ 150°C | -25°C ~ 150°C | -25°C ~ 125°C | -25°C ~ 125°C | -25°C ~ 125°C |
| Electrical Life | 100,000 Cycles | 50,000 Cycles | 50,000 Cycles | 50,000 Cycles | 50,000 Cycles | 50,000 Cycles | 50,000 Cycles | 50,000 Cycles |
| Mechanical Life | 10,000,000 Cycles | 1,000,000 Cycles | Not Specified | 5,000,000 Cycles | 5,000,000 Cycles | 5,000,000 Cycles | 5,000,000 Cycles | 5,000,000 Cycles |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | Not Specified | ROHS3 Compliant | ROHS3 Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
Engineering Selection Recommendations
For Direct Replacement with Matching Termination (0.250" / 6.3mm):
The APEM Inc. MAB104G01C04B01A provides the closest electrical match with 16A at 125V AC rating and identical termination style. This part is actively manufactured and ROHS3 compliant. The operating force of 163gf is comparable to the original 180gf specification. This part is suitable for applications where the original termination connector is already installed.
The Honeywell V15H16-CZ100A02-K and V15H16-CZ300A02-K both feature 0.250" (6.3mm) termination with 16A at 250V AC rating, providing enhanced voltage margin. The V15H16-CZ300A02-K matches the original 180gf operating force specification exactly. Both are actively produced with RoHS compliance and superior mechanical life ratings of 5,000,000 cycles.
For Applications Accepting Reduced Current Rating:
The E-Switch LS0851502F120C1A is rated for 15A at 125V AC with 0.187" (4.7mm) termination. This part is actively manufactured with ROHS3 compliance and MSL 1 rating. The 120gf operating force is lower than the original specification. This option is suitable only for applications where 15A current capacity is sufficient and connector modification is acceptable.
For Enhanced Voltage Capability:
The Honeywell V15T16-CZ100A02-K, V15T16-DZ200A02, and V15T16-EZ100A06 all provide 16A at 250V AC rating with active product status and RoHS compliance. These parts are suitable for applications requiring higher dielectric strength or operation in higher voltage environments. The V15T16-EZ100A06 features a roller actuator rather than straight lever, resulting in a longer operating position of 0.812" (20.6mm) compared to the original 0.606" (15.4mm).
Compliance Considerations:
All recommended substitute parts carry active product status and RoHS compliance certifications, ensuring long-term availability and regulatory compliance. The original TE Connectivity 1478608-3 is obsolete, making transition to an active substitute necessary for future procurement.
Frequently Asked Questions (FAQ)
Q: Can the LS0851502F120C1A be used as a direct replacement for the 1478608-3?
A: The LS0851502F120C1A is electrically compatible at 15A/125V AC but has a reduced current rating compared to the original 16A specification. The termination style differs (0.187" vs. 0.250"), requiring connector modification. This part is suitable only if the application does not require the full 16A capacity and connector changes are acceptable.
Q: What is the primary difference between the V15H16-CZ100A02-K and V15H16-CZ300A02-K?
A: Both parts are identical except for operating force. The V15H16-CZ100A02-K has 60gf operating force and 10gf release force, while the V15H16-CZ300A02-K has 180gf operating force and 30gf release force. The V15H16-CZ300A02-K matches the original 1478608-3 operating force specification exactly.
Q: Why do some substitute parts have 250V AC rating instead of 125V AC?
A: The Honeywell V15 series parts are rated for 250V AC, which exceeds the original 125V AC specification. This higher voltage rating provides additional dielectric margin and is suitable for all applications requiring 125V AC or lower. The 16A current rating remains consistent across these parts.
Q: What is the significance of the different termination styles (0.187" vs. 0.250")?
A: The termination style determines the connector pin size. The original 1478608-3 uses 0.250" (6.3mm) quick connect terminals. Substitute parts with 0.187" (4.7mm) termination require different connector hardware. Direct mechanical replacement without connector modification requires matching termination style.
Q: Is the V15T16-EZ100A06 compatible with the original application?
A: The V15T16-EZ100A06 is electrically compatible with 16A at 250V AC and matching 0.187" (4.7mm) termination. However, this part features a roller actuator instead of a straight lever, and the operating position is 0.812" (20.6mm) compared to the original 0.606" (15.4mm). This longer travel distance may affect mechanical fit in the original enclosure. Verification of mechanical clearance is required.
Q: What does "On-Mom" switch function mean?
A: On-Mom (On-Momentary) indicates the switch has two positions: a maintained on position and a momentary position. All substitute parts listed maintain this function specification.
Q: Are all substitute parts RoHS compliant?
A: Yes, all active substitute parts listed carry RoHS compliance certifications (either RoHS or ROHS3). The original TE Connectivity 1478608-3 does not specify RoHS status due to its obsolete classification.
Q: What is the difference between electrical life and mechanical life ratings?
A: Electrical life measures the number of switching cycles under electrical load before electrical performance degrades. Mechanical life measures the number of physical actuations before mechanical wear affects operation. The original 1478608-3 specifies 100,000 electrical cycles and 10,000,000 mechanical cycles. Most substitute parts specify 50,000 electrical cycles and 1,000,000 to 5,000,000 mechanical cycles.
Q: Can I use a lower current rated part (15A) in place of the 16A original?
A: A 15A rated part can be used only if the application circuit draws less than 15A continuously. Using a lower rated component in a circuit designed for 16A creates risk of thermal stress and premature failure. Verify actual circuit current requirements before selecting a reduced-rating substitute.
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