GLLA04D Equivalent & Substitute Parts

Part Overview

The GLLA04D is a snap action switch manufactured by Honeywell Sensing and Productivity Solutions, configured as a single-pole double-throw (SPDT) momentary contact device rated for 10A at 300V AC and 250V DC. The switch features a lever roller actuator, chassis mount configuration, and screw terminal termination with IP66 ingress protection. The GLLA04D is classified as obsolete, necessitating identification of equivalent substitute components for ongoing applications and new designs requiring this switch topology.

Key Parameters

Parameter	Value
Manufacturer	Honeywell Sensing and Productivity Solutions
Series	GLL
Circuit Configuration	SPDT (MBB)
Switch Function	On-Momentary
Current Rating	10A AC/DC
Voltage Rating - AC	300V
Voltage Rating - DC	250V
Actuator Type	Lever, Roller
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
RoHS Status	RoHS Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the GLLA04D is determined by strict equivalence across the following critical parameters:

Electrical Equivalence: Circuit configuration (SPDT MBB), switch function (On-Momentary), current rating (10A AC/DC), voltage ratings (300V AC / 250V DC), and operating temperature range (-10°C to 80°C) must remain identical.

Mechanical Equivalence: Actuator type (Lever, Roller), mounting type (Chassis Mount), termination style (Screw Terminal), and ingress protection rating (IP66) must match.

Compliance Equivalence: RoHS compliance status and MSL rating must be maintained.

Acceptable Variations: Pretravel, differential travel, overtravel, operating force, and release force may vary within the GLL series design envelope without affecting functional substitution, provided all critical parameters remain constant.

Parameter Comparison

Parameter	GLLA04D (Main Part)	GLLA04F (Substitute)	Compatibility
Manufacturer	Honeywell Sensing and Productivity Solutions	Honeywell Sensing and Productivity Solutions	Match
Series	GLL	GLL	Match
Circuit Configuration	SPDT (MBB)	SPDT (MBB)	Match
Switch Function	On-Momentary	On-Momentary	Match
Current Rating	10A AC/DC	10A AC/DC	Match
Voltage Rating - AC	300V	300V	Match
Voltage Rating - DC	250V	250V	Match
Actuator Type	Lever, Roller	Lever, Roller	Match
Mounting Type	Chassis Mount	Chassis Mount	Match
Termination Style	Screw Terminal	Screw Terminal	Match
Ingress Protection	IP66	IP66	Match
Operating Temperature Range	-10°C to 80°C	-10°C to 80°C	Match
Mechanical Life	5,000,000 Cycles	5,000,000 Cycles	Match
RoHS Status	RoHS Compliant	RoHS Compliant	Match
MSL Rating	1 (Unlimited)	1 (Unlimited)	Match
Operating Force	510gf	510gf	Match
Release Force	153gf	153gf	Match
Pretravel	0.138" (3.5mm)	0.197" (5.0mm)	Variation
Differential Travel	0.060" (1.5mm)	0.080" (2.0mm)	Variation
Overtravel	0.175" (4.5mm)	0.197" (5.0mm)	Variation
Product Status	Obsolete	Active	Upgrade Path

Engineering Selection Recommendations

The GLLA04F serves as a direct functional equivalent to the GLLA04D within the GLL series snap action switch family. Both components satisfy identical electrical and mechanical requirements for SPDT momentary contact applications at 10A / 300V AC operation.

The GLLA04F is classified as an active product, whereas the GLLA04D is obsolete. For new designs and ongoing production requiring SPDT snap action switches with these specifications, the GLLA04F is the appropriate selection. Both components maintain RoHS compliance and identical MSL ratings, ensuring regulatory and environmental compatibility.

Pretravel, differential travel, and overtravel parameters differ between the two variants. These variations reflect design refinements within the GLL series and do not affect electrical or mechanical substitution compatibility. Applications requiring specific actuation characteristics should reference the detailed mechanical specifications for each variant.

Frequently Asked Questions (FAQ)

Q: Can the GLLA04F directly replace the GLLA04D in existing applications?

A: Yes. The GLLA04F is electrically and mechanically equivalent to the GLLA04D across all critical parameters: circuit configuration, current and voltage ratings, actuator type, mounting configuration, termination style, and ingress protection. Both components operate within the same temperature range and maintain identical mechanical life ratings.

Q: What is the difference between the GLLA04D and GLLA04F?

A: The primary differences are product status and mechanical travel characteristics. The GLLA04D is obsolete; the GLLA04F is active. The GLLA04F exhibits increased pretravel (0.197" versus 0.138"), differential travel (0.080" versus 0.060"), and overtravel (0.197" versus 0.175"). These variations represent design refinements within the GLL series and do not affect functional substitution.

Q: Are both parts RoHS compliant?

A: Yes. Both the GLLA04D and GLLA04F are RoHS compliant with MSL rating 1 (Unlimited).

Q: What is the mechanical life expectancy for these switches?

A: Both components are rated for 5,000,000 mechanical cycles under specified operating conditions.

Q: Can these switches be used in DC applications?

A: Yes. Both the GLLA04D and GLLA04F are rated for 10A at 250V DC, in addition to 300V AC operation.

Q: What is the ingress protection rating?

A: Both components feature IP66 ingress protection, providing dust-tight and water-resistant sealing suitable for harsh industrial environments.

Q: Are the screw terminals compatible between the two parts?

A: Yes. Both components use identical screw terminal termination, ensuring compatibility with existing wiring and connector systems.

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