Equivalent & Substitute Parts for Honeywell 91MCE2-PQ

Part Overview

The Honeywell 91MCE2-PQ is a snap action DPST switch designed for chassis mount applications with a 6A AC / 550mA DC current rating at 120V AC / 125V DC. This component features a roller plunger actuator, IP67 ingress protection, and connector-style termination. The 91MCE2-PQ is classified as obsolete, making identification of functionally equivalent active alternatives essential for ongoing system support and new design implementations.

Substiute Parts

91MCE2-PQ

Honeywell Sensing and Productivity SolutionsIn Stock: 106591MCE2-PQ Datasheet

Current PartRFQ

NGCMA00NX01C

Honeywell Sensing and Productivity SolutionsIn Stock: 846NGCMA00NX01C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 91MCE2-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, 550mA DC minimum
• Voltage rating: 120V AC minimum, 125V DC minimum

Mechanical Equivalence Requirements:

• Actuator type: Roller Plunger
• Mounting type: Chassis Mount
• Termination style: Connector
• Ingress protection: IP67 minimum

Environmental & Compliance Requirements:

• Operating temperature range: Must encompass or match the original specification
• Electrical and mechanical life: Must meet or exceed original ratings
• RoHS compliance: Required
• MSL rating: Must be MSL 1

The substitute part NGCMA00NX01C meets all electrical and mechanical equivalence criteria. Both parts are manufactured by Honeywell Sensing and Productivity Solutions and share identical circuit configuration, current/voltage ratings, actuator type, mounting method, termination style, and ingress protection rating.

Parameter Comparison

Engineering Selection Recommendations

The NGCMA00NX01C is the direct functional equivalent for the obsolete 91MCE2-PQ. Both components share identical electrical ratings, circuit configuration, and mechanical mounting characteristics. The substitute part is currently in active production status with 806 units available in inventory, compared to the obsolete 91MCE2-PQ.

Compliance Status: Both parts maintain RoHS compliance and MSL 1 rating, ensuring compatibility with modern manufacturing and storage requirements.

Temperature Consideration: The NGCMA00NX01C operates across -25°C to 75°C, which covers the lower portion of the original 91MCE2-PQ range (-25°C to 85°C). Applications requiring operation above 75°C must be evaluated against actual system thermal requirements.

Mechanical Characteristics: Minor variations exist in pretravel, differential travel, and overtravel specifications. These differences remain within acceptable tolerances for chassis-mounted snap action switch applications and do not affect functional equivalence for standard switching operations.

Procurement: The NGCMA00NX01C is recommended for all new designs and replacement applications where the 91MCE2-PQ is specified, due to active product status and current availability.

Frequently Asked Questions (FAQ)

Q: Can the NGCMA00NX01C directly replace the 91MCE2-PQ in existing assemblies?

A: Yes. Both parts share identical electrical ratings (6A AC / 550mA DC at 120V AC / 125V DC), circuit configuration (DPST-NO/NC), actuator type (roller plunger), mounting method (chassis mount), termination style (connector), and ingress protection (IP67). The parts are functionally equivalent for switching applications.

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

A: The 91MCE2-PQ operates from -25°C to 85°C, while the NGCMA00NX01C operates from -25°C to 75°C. Applications requiring operation above 75°C must confirm that system thermal conditions remain within the NGCMA00NX01C specification. Most industrial and commercial applications operate within this range.

Q: Are there differences in mechanical actuation characteristics?

A: Minor differences exist in pretravel (0.071" vs. 0.083"), differential travel (0.031" vs. 0.047"), and overtravel (0.125" vs. 0.193"). These variations are within normal manufacturing tolerances for snap action switches and do not affect functional performance in standard switching applications.

Q: Why is the 91MCE2-PQ listed as obsolete?

A: The 91MCE2-PQ has been discontinued by Honeywell. The NGCMA00NX01C represents the active production equivalent and is the recommended part for all new designs and ongoing procurement.

Q: Are both parts RoHS compliant?

A: Yes. Both the 91MCE2-PQ and NGCMA00NX01C are RoHS compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and manufacturing standards.

Q: What is the packaging difference between these parts?

A: The 91MCE2-PQ is supplied with standard packaging, while the NGCMA00NX01C is supplied in bulk packaging. This difference does not affect component functionality or performance.