7303SYCME Toggle Switch 3PDT Equivalent & Substitute Parts

Part Overview

The 7303SYCME is a 3PDT toggle switch manufactured by C&K, rated for 5A at 120V AC and 28V DC. This panel-mount switch features a standard round actuator with PC pin termination and epoxy sealed terminals. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs requiring compatible functionality.

Substiute Parts

7303SYCME

C&KIn Stock: 9607303SYCME Datasheet

Current PartRFQ

7303SYCSE

C&KIn Stock: 10427303SYCSE Datasheet

DirectRFQ

34A3P31B1M2QT

Grayhill Inc.In Stock: 97634A3P31B1M2QT Datasheet

SimilarRFQ

A321S1YCQ

ElectroswitchIn Stock: 863A321S1YCQ Datasheet

SimilarRFQ

MTA306EPC

TE Connectivity ALCOSWITCH SwitchesIn Stock: 723MTA306EPC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7303SYCME is determined by the following critical parameters:

• Circuit Configuration: Must be 3PDT
• Switch Function: Must be On-Off-On
• Mounting Type: Must be Panel Mount
• Termination Style: Must be PC Pin
• Bushing Thread: Must be 1/4-40
• Current Rating: Minimum 5A (AC/DC)
• Voltage Rating - AC: Minimum 120V
• Voltage Rating - DC: Minimum 28V
• Actuator Type: Standard Round
• Operating Temperature Range: Must encompass -30°C to 85°C

The 7303SYCSE is a direct equivalent from C&K, sharing identical electrical and mechanical specifications with improved compliance status. The remaining parts (34A3P31B1M2QT, A321S1YCQ, MTA306EPC) are similar substitutes that meet or exceed the core electrical and mechanical requirements, though with minor variations in actuator length, current ratings, or temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

7303SYCSE is the primary substitute. As an active product from the same manufacturer (C&K), it provides identical electrical and mechanical specifications to the 7303SYCME while offering RoHS compliance and REACH affected status, making it suitable for applications with regulatory requirements.

34A3P31B1M2QT (Grayhill Inc.) is a compatible substitute with equivalent electrical ratings and mechanical compatibility. The actuator length is 0.26mm shorter, and AC voltage rating is 5V higher (125V vs 120V). RoHS compliance and REACH unaffected status support use in regulated environments.

A321S1YCQ (Electroswitch) exceeds the original specifications with 6A current rating and 60,000 cycle electrical life. Operating temperature extends to 90°C. RoHS compliance is confirmed, though REACH status is vendor undefined. Suitable for applications requiring higher reliability margins.

MTA306EPC (TE Connectivity ALCOSWITCH) provides 6A AC rating with ROHS3 compliance and REACH affected status. DC current rating is 4A, meeting the 28V DC requirement. Operating temperature range (-20°C to 80°C) is narrower than the original specification. Suitable for applications prioritizing environmental compliance.

Frequently Asked Questions (FAQ)

Q: Can the 7303SYCSE directly replace the 7303SYCME without modification?

A: Yes. The 7303SYCSE shares identical electrical and mechanical specifications, including circuit configuration, current and voltage ratings, mounting dimensions, and termination style. The primary difference is product status (active vs. obsolete) and improved RoHS compliance.

Q: What are the key differences between the Grayhill and Electroswitch substitutes?

A: The Grayhill 34A3P31B1M2QT maintains the 5A current rating matching the original part. The Electroswitch A321S1YCQ provides higher current capacity (6A) and extended electrical life (60,000 cycles vs. 40,000 cycles). Both are mechanically compatible with identical bushing threads and panel cutout dimensions.

Q: Is the TE Connectivity MTA306EPC suitable for DC applications?

A: The MTA306EPC is rated for 4A DC at 28V, which meets the original 28V DC requirement. However, the 4A DC rating is lower than the 5A AC/DC rating of the 7303SYCME. Applications requiring 5A DC should use alternative substitutes.

Q: What is the impact of actuator length variations?

A: The 7303SYCME has a 10.67mm actuator length. Substitutes range from 10.41mm to 10.49mm. These variations are within typical mechanical tolerances for panel-mount toggle switches and do not affect functional compatibility or panel mounting.

Q: Are all substitutes RoHS compliant?

A: The 7303SYCME is RoHS non-compliant. All listed substitutes (7303SYCSE, 34A3P31B1M2QT, A321S1YCQ, MTA306EPC) are RoHS compliant or ROHS3 compliant, supporting use in applications with environmental regulatory requirements.

Q: What is the difference between REACH Affected and REACH Unaffected status?

A: REACH Affected indicates the manufacturer has declared substances of concern in the product and maintains compliance documentation. REACH Unaffected indicates no substances of concern are present. Both statuses support use in regulated applications; REACH Affected parts require additional compliance verification by the end user.