Overview
The Micro Switch LSZ51A is a replacement lever arm actuator designed for heavy-duty industrial limit switch applications. As a front-mount fixed rotary lever with nylon roller, it is designed for use with the Micro-switch HDLS series limit and enclosed switches. This component provides reliable position sensing and control in machinery, conveyors, packaging equipment, and process automation where limit switches must detect equipment position or travel limits.
Key Features
- 1.50 inch (38.1 mm) long roller lever with 0.32 inch (8.1 mm) wide by 0.75 inch (19mm) diameter nylon roller
- Front-mount fixed rotary design for direct compatibility with HDLS series limit switches
- Nylon roller material resists corrosion and wear in demanding industrial environments
- Standard replacement for existing HDLS installations
- Robust cast zinc/nylon construction rated for continuous industrial duty
Technical Specifications
- Manufacturer: Honeywell (Micro Switch)
- Part Number: LSZ51A
- Type: Fixed Rotary Lever Actuator
- Mount Position: Front Mount
- Roller Material: Nylon
- Roller Diameter: 0.75 inch (19 mm)
- Roller Width: 0.32 inch (8.1 mm)
- Lever Length: 1.50 inch (38.1 mm)
- Arm Dimensions: 1.5 in L × 0.75 in W × 0.83 in D
- Material: Cast Zinc / Nylon
- Compatible Series: Honeywell HDLS Series Heavy-Duty Limit Switches
Typical Applications
- Position detection on conveyor systems and material handling equipment
- Emergency stop activation and end-of-travel limit sensing
- Machinery safety interlocks in manufacturing and food processing
- Production line control and automation
- Overtravel protection on industrial machinery
- Heavy-duty industrial automation requiring reliable position feedback
Compatibility & Replacements
Compatible With
- Honeywell Micro Switch HDLS Series Heavy-Duty Limit Switches
- HDLS-series base units and switchheads with front-mount configuration
- Enclosed switches using HDLS platform
Replaces / Drop-In Replacement For
- Original Micro Switch LSZ51A units (standard replacement lever)
- Worn or damaged LSZ51A assemblies on HDLS-based systems
Works With
- Honeywell HDLS Series limit switch platforms
- Standard 18PA1 terminal block receptacles (ordered separately if needed)
- Industrial control systems and PLC inputs requiring discrete position sensing
- Safety circuits and emergency stop logic in machinery control
