Equivalent & Substitute Parts for Honeywell 91MCE27-S1

Part Overview

The Honeywell 91MCE27-S1 is a snap action DPST switch rated for 6A at 120V AC with panel mount configuration and IP67 ingress protection. This component features a round pin plunger actuator, cable lead termination, and is designed for applications requiring momentary on/off switching functionality.

The 91MCE27-S1 carries an obsolete product status. Identifying equivalent substitute parts ensures continued availability for maintenance, repair, and new production applications where this switch specification remains functionally required.

Substiute Parts

91MCE27-S1

Honeywell Sensing and Productivity SolutionsIn Stock: 90791MCE27-S1 Datasheet

Current PartRFQ

NGCMA10AX01N

Honeywell Sensing and Productivity SolutionsIn Stock: 1015NGCMA10AX01N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 91MCE27-S1 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Circuit configuration: DPST-NO/NC
• Current rating: 6A (AC) and 550mA (DC)
• Voltage rating: 120V (AC) and 125V (DC)
• Electrical life: 500,000 cycles minimum

Mechanical Equivalence Requirements:

• Actuator type: Round pin plunger
• Mounting type: Panel mount
• Termination style: Cable leads
• Ingress protection: IP67
• Switch function: On-Mom, Off-Mom
• Mechanical life: 5,000,000 cycles minimum

Compliance Requirements:

• RoHS compliant
• Moisture sensitivity level: 1 (Unlimited)

The substitute part NGCMA10AX01N meets all electrical, mechanical, and compliance criteria. Variations in operating force, pretravel, differential travel, and overtravel are within acceptable mechanical tolerance ranges for this switch category and do not affect functional substitution.

Parameter Comparison

Engineering Selection Recommendations

The NGCMA10AX01N is a direct functional substitute for the obsolete 91MCE27-S1 based on electrical and mechanical equivalence across all critical parameters. Both components are manufactured by Honeywell Sensing and Productivity Solutions and carry identical RoHS compliance and moisture sensitivity ratings.

Substitution Considerations:

The NGCMA10AX01N operates within a narrower temperature range (-25°C to 75°C versus -25°C to 85°C). Applications requiring operation above 75°C must evaluate this limitation against specific system requirements.

Mechanical characteristics differ: the NGCMA10AX01N requires higher operating force (1122gf versus 816gf), exhibits greater pretravel (0.083" versus 0.063"), and greater overtravel (0.193" versus 0.134"). These differences fall within standard mechanical tolerance ranges for snap action switches and do not affect electrical performance or circuit compatibility.

The NGCMA10AX01N carries active product status, ensuring continued manufacturing availability and supply chain reliability compared to the obsolete 91MCE27-S1.

Frequently Asked Questions (FAQ)

Q: Can NGCMA10AX01N directly replace 91MCE27-S1 in existing applications?

A: Yes. Both switches share identical electrical ratings (6A at 120V AC), circuit configuration (DPST-NO/NC), actuator type (round pin plunger), mounting method (panel mount), and termination style (cable leads). Electrical and mechanical compatibility is established.

Q: What is the significance of the operating force difference?

A: The NGCMA10AX01N requires 1122gf actuation force compared to 816gf for the 91MCE27-S1. This represents a mechanical characteristic difference within acceptable ranges for snap action switches. Applications must confirm that actuator mechanisms can accommodate this higher force requirement.

Q: Does the temperature range difference affect substitution?

A: The NGCMA10AX01N operates to 75°C maximum versus 85°C for the 91MCE27-S1. Applications operating continuously above 75°C require evaluation of this limitation. Most standard industrial applications operate within the 75°C upper limit.

Q: Are both parts RoHS compliant?

A: Yes. Both 91MCE27-S1 and NGCMA10AX01N are RoHS compliant with moisture sensitivity level 1 (unlimited). No environmental or regulatory restrictions apply to substitution.

Q: What is the packaging difference?

A: The 91MCE27-S1 is supplied with cable leads as standard termination. The NGCMA10AX01N is available in bulk packaging. Termination style remains identical (cable leads) for both parts.

Q: Why is 91MCE27-S1 obsolete?

A: The 91MCE27-S1 carries obsolete product status. The NGCMA10AX01N represents the current active equivalent from Honeywell Sensing and Productivity Solutions, ensuring long-term supply availability and manufacturing support.