Equivalent & Substitute Parts for Honeywell 91MCE2-SQ

Part Overview

The Honeywell 91MCE2-SQ 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-SQ is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and component procurement.

Substiute Parts

91MCE2-SQ

Honeywell Sensing and Productivity SolutionsIn Stock: 79691MCE2-SQ Datasheet

Current PartRFQ

NGCMA00NX01C

Honeywell Sensing and Productivity SolutionsIn Stock: 846NGCMA00NX01C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 91MCE2-SQ is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

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

Acceptable Variation Parameters:

• Operating force and release force (mechanical characteristics that do not affect electrical function)
• Pretravel, differential travel, and overtravel (mechanical stroke parameters)
• Operating temperature range (substitute may have narrower range)
• Electrical and mechanical life ratings (substitute must meet or exceed)

The Honeywell NGCMA00NX01C meets all critical matching parameters and is classified as an active product, making it a valid substitute for the obsolete 91MCE2-SQ.

Parameter Comparison

Engineering Selection Recommendations

The Honeywell NGCMA00NX01C is a direct functional substitute for the obsolete 91MCE2-SQ based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical circuit configuration (DPST-NO/NC), switch function (On-Mom, Off-Mom), current ratings (6A AC / 550mA DC), and voltage ratings (120V AC / 125V DC). Electrical performance is fully equivalent.

Mechanical Compatibility: Both parts feature roller plunger actuators, chassis mount configuration, and connector-style termination. Physical mounting and interface compatibility are maintained.

Environmental Protection: Both parts provide IP67 ingress protection (dust tight, waterproof), ensuring equivalent environmental sealing performance.

Regulatory Compliance: Both parts are RoHS compliant and carry MSL 1 (Unlimited) moisture sensitivity classification, meeting identical compliance requirements.

Product Status Advantage: The NGCMA00NX01C is classified as an active product with current manufacturing support, whereas the 91MCE2-SQ is obsolete. Selection of the NGCMA00NX01C ensures long-term component availability and supply chain continuity.

Operating Temperature Consideration: The NGCMA00NX01C operates within -25°C to 75°C, compared to the 91MCE2-SQ range of -25°C to 85°C. Applications requiring operation above 75°C require evaluation against actual system thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can the NGCMA00NX01C directly replace the 91MCE2-SQ in existing designs?

A: Yes. The NGCMA00NX01C meets all critical electrical and mechanical parameters required for direct substitution. Both parts share identical circuit configuration, current and voltage ratings, actuator type, mounting method, and termination style. Physical and electrical interfaces are compatible.

Q: What is the difference in operating force between these two parts?

A: The 91MCE2-SQ has an operating force of 816gf, while the NGCMA00NX01C requires 1122gf. This represents a mechanical characteristic difference that does not affect electrical function. Applications must confirm that the higher actuation force of the NGCMA00NX01C is compatible with the mechanical system design.

Q: Are there temperature range limitations with the substitute part?

A: The NGCMA00NX01C operates within -25°C to 75°C, compared to the 91MCE2-SQ range of -25°C to 85°C. If the application requires sustained operation above 75°C, the substitute part may not be suitable. Verify actual system operating temperatures against this specification.

Q: Do both parts have the same packaging?

A: No. The 91MCE2-SQ is supplied with unspecified packaging, while the NGCMA00NX01C is supplied in bulk packaging. Procurement and handling procedures may differ accordingly.

Q: Are both parts RoHS compliant?

A: Yes. Both the 91MCE2-SQ and NGCMA00NX01C are RoHS compliant and carry MSL 1 (Unlimited) moisture sensitivity classification, meeting identical regulatory requirements.

Q: What is the advantage of selecting the NGCMA00NX01C over the 91MCE2-SQ?

A: The NGCMA00NX01C is an active product with current manufacturing support, whereas the 91MCE2-SQ is obsolete. Selection of the active product ensures reliable long-term component availability and supply chain continuity for ongoing production and field support.

Q: Do both parts have identical electrical life ratings?

A: Yes. Both parts are rated for 500,000 electrical cycles and 5,000,000 mechanical cycles, providing equivalent operational durability.