91MCE1-PQ Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The 91MCE1-PQ is a DPST snap action switch manufactured by Honeywell Sensing and Productivity Solutions, rated for 6A at 120V AC operation. This component features a round pin plunger actuator, chassis mount configuration, and IP67 ingress protection suitable for industrial control applications. The 91MCE1-PQ is classified as obsolete, making identification of functionally equivalent active alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

91MCE1-PQ

Honeywell Sensing and Productivity SolutionsIn Stock: 80591MCE1-PQ Datasheet

Current PartRFQ

NGCMA00NX01B

Honeywell Sensing and Productivity SolutionsIn Stock: 1109NGCMA00NX01B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 91MCE1-PQ is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Circuit configuration: DPST-NO/NC
• Switch function: On-Mom, Off-Mom
• Current rating: 6A AC minimum
• Voltage rating: 120V AC minimum
• Ingress protection: IP67 or equivalent

Mechanical Equivalence Requirements:

• Actuator type: Round pin plunger
• Mounting type: Chassis mount
• Termination style: Connector
• Operating force: 1122gf

Environmental & Compliance Requirements:

• Operating temperature range: Must encompass or exceed -25°C to 85°C
• RoHS compliance: Required
• Electrical life: 500,000 cycles minimum
• Mechanical life: 5,000,000 cycles minimum

The NGCMA00NX01B meets all critical electrical and mechanical parameters. Variations in pretravel, differential travel, and overtravel specifications remain within acceptable tolerances for DPST snap action switch applications. The substitute part maintains identical current and voltage ratings, circuit configuration, and actuator characteristics.

Parameter Comparison

Engineering Selection Recommendations

The NGCMA00NX01B serves as the functional equivalent for the obsolete 91MCE1-PQ based on identical electrical ratings, circuit configuration, and mechanical actuator specifications. Both components are manufactured by Honeywell Sensing and Productivity Solutions and maintain RoHS compliance with MSL 1 classification.

Selection Criteria:

The NGCMA00NX01B is appropriate for applications where the operating temperature requirement does not exceed 75°C. Applications requiring operation at temperatures between 75°C and 85°C must evaluate alternative solutions, as the substitute part's upper temperature limit is 10°C lower than the original 91MCE1-PQ specification.

The NGCMA00NX01B exhibits increased pretravel (0.083" versus 0.071"), differential travel (0.047" versus 0.031"), and overtravel (0.193" versus 0.125") specifications. These variations are characteristic of design evolution within the NGC series and do not affect functional equivalence for standard DPST switching applications. Applications with critical actuation distance requirements must confirm compatibility with the substitute part's mechanical characteristics.

The NGCMA00NX01B is currently in active production with 1024 units available in inventory, compared to the obsolete 91MCE1-PQ status with limited remaining stock of 719 units.

Frequently Asked Questions (FAQ)

Q: Can the NGCMA00NX01B directly replace the 91MCE1-PQ in existing designs?

A: The NGCMA00NX01B provides electrical and mechanical equivalence for standard DPST switching applications. Both components share identical current ratings (6A AC, 550mA DC), voltage ratings (120V AC, 125V DC), circuit configuration (DPST-NO/NC), and actuator type (round pin plunger). Compatibility depends on application-specific requirements regarding operating temperature and actuation distance tolerances.

Q: What is the significance of the temperature range difference?

A: The 91MCE1-PQ operates across -25°C to 85°C, while the NGCMA00NX01B operates across -25°C to 75°C. Applications requiring continuous operation above 75°C cannot use the NGCMA00NX01B as a direct substitute. Applications operating within -25°C to 75°C are unaffected by this specification difference.

Q: How do the mechanical travel specifications differ?

A: The NGCMA00NX01B exhibits greater pretravel (0.083" versus 0.071"), differential travel (0.047" versus 0.031"), and overtravel (0.193" versus 0.125") compared to the 91MCE1-PQ. These differences reflect design evolution within the NGC series. Applications with mechanical constraints or critical actuation distance requirements must confirm that the substitute part's travel specifications are compatible with the mechanical design.

Q: Are both parts RoHS compliant?

A: Both the 91MCE1-PQ and NGCMA00NX01B are RoHS compliant with MSL 1 (Unlimited) moisture sensitivity level classification, suitable for standard industrial control applications without special handling requirements.

Q: What is the product status difference?

A: The 91MCE1-PQ is classified as obsolete with limited remaining inventory (719 units). The NGCMA00NX01B is an active production component with current availability (1024 units). For new designs and long-term system support, the NGCMA00NX01B is the recommended selection.

Q: Are the connector terminations identical?

A: Both components use connector termination style for chassis mount applications. Physical connector compatibility must be confirmed during integration, as connector specifications are not detailed in the provided parameters.