Equivalent & Substitute Parts for Honeywell 91MCE3-S1

Part Overview

The Honeywell 91MCE3-S1 is a snap action DPST switch rated for 6A at 120V AC with cross roller plunger actuation and chassis mount configuration. This component features IP67 ingress protection and cable lead termination with a 1-meter cable length. The 91MCE3-S1 carries an obsolete product status, necessitating identification of functionally equivalent alternatives for ongoing system support and procurement requirements.

Key Parameters

Parameter	Value
Circuit Configuration	DPST-NO/NC
Switch Function	On-Mom, Off-Mom
Current Rating (AC)	6A
Current Rating (DC)	550mA
Voltage Rating (AC)	120V
Voltage Rating (DC)	125V
Actuator Type	Cross Roller Plunger
Mounting Type	Chassis Mount
Termination Style	Cable Leads
Ingress Protection	IP67
Operating Temperature Range	-25°C to 85°C
Electrical Life	500,000 Cycles
Mechanical Life	5,000,000 Cycles
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 91MCE3-S1 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

Circuit configuration must be DPST-NO/NC
Switch function must be On-Mom, Off-Mom
Current rating must support minimum 6A AC and 550mA DC
Voltage ratings must support minimum 120V AC and 125V DC

Mechanical Compatibility Requirements:

Actuator type must be Cross Roller Plunger
Mounting type must be Chassis Mount
Termination style must be Cable Leads
Ingress protection must be IP67 or equivalent

Lifecycle & Compliance Requirements:

Electrical life minimum 500,000 cycles
Mechanical life minimum 5,000,000 cycles
RoHS compliance required

The NGCMA10AX01L meets all mandatory electrical, mechanical, and compliance criteria, establishing it as a direct functional equivalent despite differences in certain operational parameters.

Parameter Comparison

Parameter	91MCE3-S1 (Main Part)	NGCMA10AX01L (Substitute)	Compatibility Status
Manufacturer	Honeywell Sensing and Productivity Solutions	Honeywell Sensing and Productivity Solutions	Same Manufacturer
Circuit Configuration	DPST-NO/NC	DPST-NO/NC	Equivalent
Switch Function	On-Mom, Off-Mom	On-Mom, Off-Mom	Equivalent
Current Rating (AC)	6A	6A	Equivalent
Current Rating (DC)	550mA	550mA	Equivalent
Voltage Rating (AC)	120V	120V	Equivalent
Voltage Rating (DC)	125V	125V	Equivalent
Actuator Type	Cross Roller Plunger	Cross Roller Plunger	Equivalent
Mounting Type	Chassis Mount	Chassis Mount	Equivalent
Termination Style	Cable Leads	Cable Leads	Equivalent
Ingress Protection	IP67	IP67	Equivalent
Operating Temperature Range	-25°C to 85°C	-25°C to 75°C	Substitute Range Narrower
Electrical Life	500,000 Cycles	500,000 Cycles	Equivalent
Mechanical Life	5,000,000 Cycles	5,000,000 Cycles	Equivalent
RoHS Status	RoHS Compliant	RoHS Compliant	Equivalent
Product Status	Obsolete	Active	Substitute is Current

Engineering Selection Recommendations

The NGCMA10AX01L is the designated equivalent for the obsolete 91MCE3-S1 based on the following engineering criteria:

Electrical Equivalence: Both components share 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). These parameters establish functional interchangeability in electrical applications.

Mechanical Equivalence: Both components feature cross roller plunger actuation, chassis mount configuration, cable lead termination, and IP67 ingress protection. These specifications ensure mechanical compatibility in existing mounting and environmental applications.

Compliance Status: Both components are RoHS compliant and carry identical ECCN classification (EAR99). The NGCMA10AX01L maintains active product status, ensuring ongoing availability and supply chain continuity.

Temperature Consideration: The NGCMA10AX01L operates across -25°C to 75°C, compared to the 91MCE3-S1 range of -25°C to 85°C. Applications requiring operation above 75°C require engineering review.

Frequently Asked Questions (FAQ)

Q: Can the NGCMA10AX01L directly replace the 91MCE3-S1 in existing designs?

A: Yes, for applications operating within the -25°C to 75°C temperature range. Both components share identical electrical ratings, circuit configuration, and mechanical mounting specifications. Applications requiring operation above 75°C require thermal analysis.

Q: What are the key differences between these two components?

A: The primary differences are product status (91MCE3-S1 is obsolete; NGCMA10AX01L is active) and operating temperature range (91MCE3-S1 extends to 85°C; NGCMA10AX01L to 75°C). Operating force and pretravel specifications differ but do not affect functional equivalence for standard switching applications.

Q: Are there packaging differences between the 91MCE3-S1 and NGCMA10AX01L?

A: The 91MCE3-S1 is supplied with cable leads and 1-meter cable length. The NGCMA10AX01L is supplied in bulk packaging. Both maintain identical termination style and cable lead configuration.

Q: What compliance certifications apply to the NGCMA10AX01L?

A: The NGCMA10AX01L is RoHS compliant, REACH unaffected, and carries EAR99 ECCN classification. These certifications match the regulatory requirements of the 91MCE3-S1.

Q: Is the NGCMA10AX01L available for immediate procurement?

A: The NGCMA10AX01L carries active product status with 899 pieces in current inventory, ensuring availability for new designs and replacement applications.

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