GLLC03C Equivalent & Substitute Parts Reference

Part Overview

The Honeywell GLLC03C is a snap action switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 10A at 300V AC and 250V DC. This component features a roller plunger actuator, chassis mount configuration, and screw terminal termination. The GLLC03C is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing applications and new designs.

Key Parameters

Parameter	GLLC03C Value
Manufacturer	Honeywell Sensing and Productivity Solutions
Series	GLL
Circuit Configuration	SPDT (BBM)
Current Rating (AC)	10A
Current Rating (DC)	Not specified
Voltage Rating (AC)	300V
Voltage Rating (DC)	250V
Actuator Type	Roller Plunger
Mounting Type	Chassis Mount
Termination Style	Screw Terminal
Ingress Protection	IP66
Operating Temperature Range	-10°C to 80°C
Mechanical Life	5,000,000 Cycles
Product Status	Obsolete
RoHS Compliance	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the GLLC03C requires evaluation against the following critical parameters:

Electrical Compatibility Criteria:

Current rating must equal or exceed 10A AC
Voltage rating must support minimum 300V AC and 250V DC operation
Circuit configuration must provide equivalent switching functionality

Mechanical Compatibility Criteria:

Actuator type must be roller plunger
Mounting configuration must be chassis mount
Termination style must be compatible with screw terminal applications

Environmental & Compliance Criteria:

Ingress protection rating must meet or exceed IP66
Operating temperature range must encompass -10°C to 80°C
RoHS compliance status must be maintained

The Omron D4N series substitute parts listed below share common mechanical and environmental characteristics with the GLLC03C, including roller plunger actuation, chassis mount design, and equivalent ingress protection ratings. However, the D4N series components feature DPST (Double Pole Double Throw) circuit configurations and reduced current ratings (3A AC, 270mA DC) compared to the GLLC03C specification. These substitutes are suitable only for applications where the reduced current capacity and different circuit topology are functionally acceptable.

Parameter Comparison

Parameter	GLLC03C	D4N-1132	D4N-1A32	D4N-1E32	D4N-2132	D4N-2A32	D4N-2E32	D4N-4132	D4N-4A32	D4N-4E32	D4N-9132
Manufacturer	Honeywell	Omron	Omron	Omron	Omron	Omron	Omron	Omron	Omron	Omron	Omron
Current Rating (AC)	10A	3A	3A	3A	3A	3A	3A	3A	3A	3A	3A
Current Rating (DC)	Not specified	270mA	270mA	270mA	270mA	270mA	270mA	270mA	270mA	270mA	270mA
Voltage Rating (AC)	300V	240V	240V	240V	240V	240V	240V	240V	240V	240V	240V
Voltage Rating (DC)	250V	250V	250V	250V	250V	250V	250V	250V	250V	250V	250V
Actuator Type	Roller Plunger	Roller Plunger	Roller Plunger	Roller Plunger	Roller Plunger	Roller Plunger	Roller Plunger	Roller Plunger	Roller Plunger	Roller Plunger	Roller Plunger
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount
Termination Style	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal	Connector
Ingress Protection	IP66	IP67	IP67	IP67	IP67	IP67	IP67	IP67	IP67	IP67	IP67
Operating Temperature Range	-10°C to 80°C	-30°C to 70°C	-30°C to 70°C	-30°C to 70°C	-30°C to 70°C	-30°C to 70°C	-30°C to 70°C	-30°C to 70°C	-30°C to 70°C	-30°C to 70°C	-30°C to 70°C
Mechanical Life	5,000,000 Cycles	15,000,000 Cycles	15,000,000 Cycles	15,000,000 Cycles	15,000,000 Cycles	15,000,000 Cycles	15,000,000 Cycles	15,000,000 Cycles	15,000,000 Cycles	15,000,000 Cycles	15,000,000 Cycles
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Compliance	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	Not applicable	ROHS3 Compliant	ROHS3 Compliant	Not applicable	ROHS3 Compliant	ROHS3 Compliant	Not applicable	ROHS3 Compliant

Engineering Selection Recommendations

Current Capacity Limitation: The D4N series substitute parts are rated for 3A AC operation, representing a 70% reduction from the GLLC03C 10A rating. Selection of D4N alternatives is restricted to applications where load current does not exceed 3A AC or 270mA DC.

Voltage Rating Consideration: The D4N series components are rated for 240V AC maximum, compared to the GLLC03C 300V AC rating. Applications requiring 300V AC operation cannot use D4N substitutes.

Circuit Configuration Difference: The GLLC03C provides SPDT (Single Pole Double Throw) switching with BBM (Break Before Make) contact sequence. The D4N series provides DPST (Double Pole Double Throw) switching with MBB (Make Before Break) or standard contact sequences depending on model variant. Circuit topology differences require functional evaluation for specific applications.

Temperature Range Variance: The GLLC03C operates from -10°C to 80°C. The D4N series operates from -30°C to 70°C. Applications requiring operation above 70°C cannot use D4N substitutes.

Ingress Protection Enhancement: The D4N series provides IP67 (dust tight, waterproof) protection compared to the GLLC03C IP66 (dust tight, water resistant) rating, representing an improvement in environmental sealing.

Product Status and Availability: All D4N series alternatives maintain active product status with current manufacturing and distribution support, contrasting with the obsolete GLLC03C status.

Compliance Status: D4N-1132, D4N-2132, D4N-4132, and D4N-9132 carry ROHS3 compliance certification. D4N-1E32, D4N-2E32, and D4N-4E32 show RoHS status as not applicable. Selection should align with regulatory requirements of the target application.

Termination Compatibility: D4N-9132 features connector termination, differing from the screw terminal configuration of the GLLC03C and other D4N variants. Applications requiring screw terminal connection must exclude D4N-9132.

Frequently Asked Questions (FAQ)

Q: Can D4N series switches directly replace the GLLC03C in all applications?

A: No. Direct replacement is limited to applications where all of the following conditions are met: load current does not exceed 3A AC, operating voltage does not exceed 240V AC, operating temperature remains within -30°C to 70°C range, and the DPST circuit configuration is functionally compatible with the original SPDT requirement.

Q: What is the primary electrical limitation when substituting GLLC03C with D4N series?

A: The D4N series current rating of 3A AC is substantially lower than the GLLC03C 10A AC rating. Applications with load currents exceeding 3A AC cannot use D4N substitutes without risk of switch failure or nuisance tripping.

Q: How do the contact sequences differ between GLLC03C and D4N substitutes?

A: The GLLC03C provides SPDT BBM (Break Before Make) contact action, ensuring the moving contact breaks connection with one terminal before making connection with the other. D4N variants provide either DPST standard or MBB (Make Before Break) contact sequences, where connection to the new terminal is established before breaking the previous connection. This difference affects circuit behavior during switching transitions.

Q: Are all D4N variants equivalent for substitution purposes?

A: No. D4N variants differ in operating position, pretravel, and contact sequence characteristics. D4N-1132, D4N-1A32, D4N-2132, D4N-2A32, D4N-4132, and D4N-4A32 share similar mechanical specifications. D4N-1E32, D4N-2E32, and D4N-4E32 feature MBB contact sequences with different operating positions and pretravel values. D4N-9132 uses connector termination instead of screw terminals. Selection must match the specific mechanical and electrical requirements of the application.

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

A: The GLLC03C operates to 80°C maximum, while D4N series components operate to 70°C maximum. Applications requiring operation above 70°C cannot use D4N substitutes. Conversely, the D4N series extends operation to -30°C compared to the GLLC03C -10°C minimum, providing enhanced low-temperature capability.

Q: Does the improved IP67 rating of D4N switches provide direct compatibility?

A: The D4N IP67 rating represents enhanced environmental protection compared to the GLLC03C IP66 rating. However, improved ingress protection does not address the fundamental electrical and mechanical differences. IP rating improvement alone does not qualify a substitute for applications requiring the GLLC03C electrical specifications.

Q: Which D4N variant should be selected for screw terminal applications?

A: All D4N variants except D4N-9132 provide screw terminal termination compatible with the GLLC03C. D4N-9132 features connector termination and is unsuitable for direct screw terminal replacement.

Q: How does the mechanical life rating comparison affect component selection?

A: The D4N series provides 15,000,000 cycle mechanical life compared to the GLLC03C 5,000,000 cycle rating. This represents a 3x improvement in mechanical durability. However, mechanical life advantage does not compensate for electrical rating deficiencies in applications exceeding D4N current or voltage specifications.

Q: What compliance considerations apply when selecting D4N substitutes?

A: D4N-1132, D4N-2132, D4N-4132, and D4N-9132 carry ROHS3 compliance certification. D4N-1E32, D4N-2E32, and D4N-4E32 show RoHS status as not applicable. Applications subject to RoHS regulatory requirements must select from the ROHS3 compliant variants.

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