Honeywell Technologies GLA Series Plunger Limit Switch, 1 NO/1 NC (SPDT), IP67, Die Cast Zinc Epoxy Coated Housing, 600V

This limit switch is a plunger-operated device designed to detect mechanical position changes in industrial control systems. It provides a robust switching solution for automation, electrical and mechanical applications where a compact, enclosure-mounted actuator is required. The unit combines a snap-action contact mechanism with environmental protection and a temperature operating range suited to demanding site conditions.

• Snap-action contact for fast, reliable state changes
• Single-pole double-throw contact reduces wiring complexity
• IP67 sealed housing for use in wet or dusty conditions
• Die-cast zinc case for strong impact resistance
• Rated for switching up to 600V and 6A for heavy electrical loads
• Mechanical endurance of 15 million cycles minimises replacement frequency

• Suitable for conveyor position sensing in manufacturing lines
• Ideal for limit detection on industrial valves and actuators
• Used with safety interlocks on machinery access panels
• Can be used for end-of-travel detection on material handling equipment

It employs a plunger actuator which requires axial contact with the moving part and allows straightforward panel or bracket mounting where linear engagement is available.

The single-pole double-throw configuration provides both normally open and normally closed outputs, enabling simple changeover or fail-safe wiring without additional switching devices.

The enclosure meets IP67 protection, allowing temporary immersion and complete dust exclusion, so it performs in exposed, wash-down, or outdoor industrial environments.

The unit operates reliably between -25 °C and 85 °C, covering typical cold storage and elevated ambient industrial conditions.

UL/ UL listed for Canada

GLA limit switches have not been designed as emergency stop or safety devices. They must not be used in applications where personal injury could occur as a result of the products failing.

IEC/EN 60947-5-1
While IEC/EN 609747-1 covers general rules relating to low voltage switchgear and controlgear, IEC/EN 60947-5-1 specifically relates to control circuit devices and switching elements. The standard monitors the characteristics of devices, the electrical and mechanical requirements and the functional requirements.

EN50047
GLC and GLD limit switches are constructed from housing that meets EN50047. EN50047 applies to position switches with an automatic return actuator. Models that meet EN50047 feature standardised characteristics and dimensions (30.5 x 31.1 x 68 mm).

IP 66
A rating of IP 66 ensures that the limit switch units are protected against dust and low-pressure jets of water.

Sealed to NEMA 1, 4, 12, 13
NEMA 1 states that enclosures can be used indoor and offers a degree of protection against contact with the equipment enclosed.
NEMA 4 states that enclosures can be used either indoor or outdoor and provide protection against windblown rain and dust, hose directed water and splashing water.
NEMA 12 states that enclosures are intended for use indoors and offer some protection from dust, dirt, falling dirt and dripping non-corrosive liquids.
NEMA 13 states that enclosures are used indoors and offer a level of protection from oil, non-corrosive coolants, spraying water and dust.