C&K 7303SCWZQE Toggle Switch 3PDT 5A 120V Equivalent & Substitute Parts

Part Overview

The C&K 7303SCWZQE is a panel-mount toggle switch with 3PDT (three-pole, double-throw) configuration rated for 5A at 120V AC and 28V DC. This switch features an On-Off-On function with solder lug termination, epoxy sealed terminals, and IP67 ingress protection. The part is currently active in production with 754 units in stock. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical compatibility, and functional specifications to ensure direct replacement capability in applications requiring 3PDT toggle switching functionality.

Substiute Parts

7303SCWZQE

C&KIn Stock: 8167303SCWZQE Datasheet

Current PartRFQ

1003P3T1B1M1QE

E-SwitchIn Stock: 11451003P3T1B1M1QE Datasheet

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1003P3T1B1M1QEH

E-SwitchIn Stock: 17121003P3T1B1M1QEH Datasheet

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5659AB

APEM Inc.In Stock: 15175659AB Datasheet

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M2033SD3W01

NKK SwitchesIn Stock: 1010M2033SD3W01 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7303SCWZQE are grouped based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Circuit configuration: 3PDT
• Switch function: On-Off-On
• Mounting type: Panel Mount
• Termination style: Solder Lug
• Panel cutout diameter: 6.35mm or 6.50mm (compatible with 1/4-40 bushing thread)
• Bushing thread: 1/4-40
• Operating temperature range: -30°C minimum to 85°C maximum
• RoHS3 compliance

Electrical Rating Compatibility:

• Current rating: 5A minimum (AC/DC) or higher
• Voltage rating - AC: 120V minimum
• Voltage rating - DC: 28V minimum

Parts meeting these criteria are considered direct substitutes. Variations in actuator length (within 10.41mm to 10.67mm range), actuator material finish, and packaging format do not affect functional substitution capability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

E-Switch 1003P3T1B1M1QE and 1003P3T1B1M1QEH are functionally equivalent to the 7303SCWZQE with identical electrical ratings (5A at 120V AC, 28V DC), matching circuit configuration, and equivalent operating temperature range. Both parts are ROHS3 compliant and active in production. The primary difference is packaging format (Tray vs. Bulk). These parts provide direct replacement capability with no electrical or mechanical compromises.

Secondary Substitutes (Acceptable with Application Review):

APEM Inc. 5659AB and NKK Switches M2033SD3W01 provide higher current ratings (6A AC) and voltage ratings (125V AC, 30V DC) compared to the 7303SCWZQE specification. Both maintain 3PDT On-Off-On configuration, panel mount compatibility, and solder lug termination. The 5659AB is active in production and ROHS3 compliant. The M2033SD3W01 is marked as obsolete and exhibits reduced electrical life (25,000 cycles vs. 40,000 cycles), making it unsuitable for new designs. The 5659AB panel cutout diameter is 6.50mm, requiring panel modification from the standard 6.35mm cutout.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance. The 7303SCWZQE and M2033SD3W01 feature IP67 ingress protection; E-Switch and APEM parts do not specify ingress protection ratings. Applications requiring sealed operation should prioritize the 7303SCWZQE or M2033SD3W01.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch 1003P3T1B1M1QE directly replace the C&K 7303SCWZQE without panel modification?

A: Yes. Both parts feature identical panel cutout diameter (6.35mm), bushing thread (1/4-40), and electrical ratings (5A at 120V AC, 28V DC). The 1003P3T1B1M1QE is a direct mechanical and electrical substitute with no panel rework required.

Q: What is the difference between E-Switch 1003P3T1B1M1QE and 1003P3T1B1M1QEH?

A: Both parts are electrically and mechanically identical. The primary difference is packaging: 1003P3T1B1M1QE is supplied in Tray format (1074 units in stock), while 1003P3T1B1M1QEH is supplied in Bulk format (1628 units in stock). Selection depends on procurement and inventory management requirements.

Q: Can the APEM 5659AB be used as a substitute without any modifications?

A: The 5659AB provides higher electrical ratings (6A AC, 125V AC) and is functionally compatible. However, the panel cutout diameter is 6.50mm versus the 7303SCWZQE specification of 6.35mm, requiring panel modification. The 5659AB is suitable for applications where panel rework is acceptable and higher current capacity is beneficial.

Q: Why is the NKK Switches M2033SD3W01 listed as a substitute if it is obsolete?

A: The M2033SD3W01 is included for reference in applications where existing inventory exists. It meets the core electrical and mechanical specifications (3PDT, On-Off-On, 120V AC minimum, panel mount). However, its obsolete status and reduced electrical life (25,000 cycles vs. 40,000 cycles) make it unsuitable for new product designs. Active alternatives should be prioritized.

Q: Are there ingress protection differences between substitute parts?

A: Yes. The 7303SCWZQE and M2033SD3W01 both feature IP67 (dust tight, waterproof) protection. The E-Switch 1003P3T1B1M1QE and 1003P3T1B1M1QEH do not specify ingress protection ratings. The APEM 5659AB does not specify ingress protection. Applications requiring sealed operation should use the 7303SCWZQE or M2033SD3W01.

Q: What is the significance of the 40,000-cycle electrical life specification?

A: Electrical life indicates the number of switching cycles the part is rated to perform before degradation. The 7303SCWZQE, E-Switch alternatives, and APEM 5659AB are all rated for 40,000 cycles. The M2033SD3W01 is rated for 25,000 cycles, representing a 37.5% reduction in cycle life and indicating reduced durability for high-frequency switching applications.

Q: Can these toggle switches be used in DC-only applications?

A: Yes. All listed parts are rated for both AC and DC operation. DC voltage ratings range from 28V (7303SCWZQE, E-Switch parts) to 30V (APEM 5659AB, NKK M2033SD3W01). DC current ratings range from 3A to 5A depending on the part selected. Application requirements should determine the appropriate substitute based on DC voltage and current needs.