Honeywell HDLS Series Coil Spring Limit Switch, SPDT, IP65, IP66, IP67, Die Cast Zinc Epoxy Coated Housing, 600V ac, 8A

This limit switch is a compact, industrial switching device designed to detect mechanical position changes and provide electrical signalling in automation and control systems. It is housed in a robust die-cast zinc enclosure and intended for vertical mounting where a fast-response snap-action contact and a Coil spring actuator are required. The unit supports both AC and DC switching and is rated for use in demanding environments.

• SPDT snap-action contact delivers definitive state change and clear signalling
• Mechanical longevity of 50 million cycles reduces maintenance intervals
• IP65, IP66, IP67 ingress protection enables use in wet and dusty locations
• Switching capacity of 8A at 600 VAC supports high-voltage control circuits
• Plug-in terminals simplify wiring and speed field replacement
• Rated maximum operating temperature of 93 °C allows elevated-temperature operation

• Suitable for conveyor end-of-travel detection in industrial lines
• Ideal for gate and door position feedback in access systems
• Used for machine-tool limit detection in manufacturing cells
• Can be used for pump or valve position monitoring in process plants
• Suitable for safety interlocks in heavy machinery installations

It provides a 12.7mm conduit entry to accept standard gland fittings for secure cable routing.

The device is specified for vertical mounting to ensure correct actuator mechanics and contact operation.

Connections use a plug-in Terminal format to allow straightforward disconnection and replacement during service.

The coil-spring actuator delivers Rapid restoration and consistent actuation force, producing reliable snap-action switching under repeated cycles.

It meets recognised standards including UL, IEC and CSA as well as RoHS and CE compliance for regulatory acceptance.

UL, CSA.

IP65, IP66, IP67
HDLS switches have a IP65, IP66 and IP67 rating. This means they are dust-tight and offer protection against water jets, heavy seas and the effects of immersion.


NEMA 1, 3, 4, 4X, 6, 6P, 12, 13
Type 1: Enclosures that meet Type 1 are for indoor use, and provide some limited protection for the enclosed equipment.
Type 3: Allows for indoor or outdoor use and provides a degree of protection against access to hazardous parts. The enclosures provide some protection from foreign objects (such as windblown dust) and the ingress of water (such as rain or snow). Enclosures that meet NEMA 3 offer protection against ice forming externally.
Type 4: Allows for indoor or outdoor use and provides a degree of protection against access to hazardous parts. The enclosures provide some protection from foreign objects (such as falling dirt and windblown dust) and the ingress of water (such as rain, snow or sleet alongside splashing water and hose directed water). Enclosures that meet NEMA 3 offer protection against ice forming externally.
Type 4X: Allows for indoor our outdoor use and provides some ptoection against windust dust and rain, corroision, splashing water and hose directed water.
Type 6: Allows for indoor or outdoor use and provides a degree of protection against access to hazardous parts. The enclosures provide some protection from foreign objects (such as falling dirt and windblown dust) and the ingress of water (such as rain, snow or sleet alongside splashing water and hose directed water). Enclosures that meet NEMA 4 offer protection against ice forming externally.
Type 6P: Allows for indoor or outdoor use and provides a degree of protection against access to hazardous parts. The enclosures provide some protection from solid objects (such as falling dirt and windblown dust) and the ingress of water (such as hose directed water). Enclosures that meet the NEMA 6P requirement also offer protection against water when being submerged at a limited depth.
Type 12: Limit switches that meet Type 12 requirements provide limited protection against dust, falling dirt and non-corrosive liquids.
Type 13: Enclosures that meet Type 13 are suited to harsh environments. Enclosures can be used indoors and provide protection against access to hazardous parts. They offer protection against solid objects such as falling dirt, windblown dirt, fibres and lint. They provide a level of protection from dripping and splashing water and other liquids such as spraying splashing and seepage of oil and non-corrosive coolants."