Overview
The Honeywell LSZ1A is a precision limit switch operating head engineered for use with the HDLS series heavy-duty limit switches. This switch accessory is specifically designed to be used with HDLS series switches. The plug-in construction feature enables removal of the unit without disconnecting wiring or conduit, thereby reducing downtime. With robust build quality and broad environmental sealing ratings, the LSZ1A serves industrial automation, machinery control, and process applications where reliable rotary actuation is critical.
Key Features
- Plug-in construction reduces downtime — fast replacement on production lines
- Rotary actuator with side actuator location for versatile mounting
- 600V AC / 250V DC voltage rating — suitable for industrial control circuits
- RoHS compliant — meets environmental and safety standards
- Operating temperature range 10°F to 250°F — performs across diverse environments
- NEMA 1, 3, 4, 4X, 6, 6P ratings — suitable for indoor, outdoor, and washdown applications
Technical Specifications
- Actuator Type: Rotary actuator
- Switch Type: Limit switch operating head
- Voltage Rating: 600V AC / 250V DC
- Actuator Location: Side
- Differential Travel: 5° maximum
- Pretravel: 15° maximum
- Overtravel: 60° minimum
- Operating Force: 4 in-lb
- Operating Temperature: 10°F to 250°F
- NEMA Rating: 1, 3, 4, 4X, 6, 6P
- Certifications: CSA, UL
- Movement: CW and CCW
- Construction: Plug-in design with ample wiring space
Typical Applications
The Honeywell LSZ1A limit switch head is used in industrial machinery, conveyor systems, packaging lines, material handling equipment, and process control systems. Its rotary actuator design and broad temperature range make it suitable for manufacturing environments with varying conditions. The plug-in architecture is especially valuable in high-cycle production lines where rapid troubleshooting and component replacement minimize downtime.
Compatibility & Replacements
Compatible With
- HDLS series switches
- LSA switches
- Heavy-duty industrial limit switch base units
Replaces / Drop-In Replacement For
The Honeywell LSZ1A is a replacement operating head for broken or worn actuators in existing HDLS limit switch installations. This range of HDLS actuators can be used to replace broken actuators rather than having to replace the switch. Verify compatibility with your specific HDLS base unit before ordering.
Works With
- HDLS series limit switch bodies and receptacles
- Industrial control circuits rated 600V AC / 250V DC
- Plug-in modular automation platforms
- High-reliability production line environments (NEMA 4X, 6, 6P rated)












