Product Overview

The Honeywell 1LS1-4PG is a high-performance, heavy-duty limit switch engineered for precision position sensing in rigorous industrial environments. Part of the renowned MICRO SWITCH LS compact series, this device utilizes a side-rotary actuator mechanism to convert mechanical motion into a reliable electrical signal. Designed with a rugged die-cast aluminum housing, the 1LS1-4PG provides exceptional durability against mechanical shock and vibration. It serves as a critical safety and control interface, ensuring that machinery stops, starts, or cycles at the exact programmed physical limits. The "PG" designation indicates a specialized conduit threading, facilitating seamless integration into international electrical systems that require PG13.5 cable entries.

Electromechanical Performance Metrics

The 1LS1-4PG is built to sustain millions of operations under demanding electrical loads. Its hardware profile is detailed as follows:

• Actuator Type: Side Rotary, Standard Roller Lever

• Circuitry: Single Pole Double Throw (SPDT), Double Break (1NC/1NO)

• Housing Material: Industrial-grade Die-cast Zinc / Aluminum

• Conduit Interface: PG 13.5 Threading

• Electrical Rating: 10 Amps Continuous (AC/DC compatible)

• Sealing Level: IP67 / NEMA 1, 3, 4, 6, and 13 protection

• Operating Force: 0.51 Nm [4.5 in-lb] maximum

• Temperature Range: -29°C to 71°C [-20°F to 160°F]

• Weight: 0.55 kg

• Dimensions: 102.1 mm x 30.2 mm x 40.0 mm

High-Demand Industrial Deployments

This limit switch excels in applications where precision and environmental resilience are mandatory. In automotive assembly lines, the 1LS1-4PG monitors the precise positioning of conveyor carriers and robotic arms, preventing mechanical over-travel. It is equally effective in material handling systems and overhead cranes, providing end-of-travel protection to ensure operator safety. Furthermore, its robust sealing makes it an ideal solution for outdoor agricultural machinery and heavy-duty valve actuators, where exposure to dust, splashing water, and oil is constant. By integrating this switch into a Distributed Control System (DCS) or PLC network, engineers can achieve deterministic feedback for high-speed automated processes.

Delivery and Handling

Delivery time: 3-5 days when payment finish, BY DHL/FEDEX/UPS. All units are shipped in anti-static industrial packaging and factory-sealed boxes to maintain component integrity during international transit.

FAQ

Q: Can the lever arm on the 1LS1-4PG be adjusted for different angles?

A: Yes, the rotary lever is fully adjustable throughout a 360-degree range around the shaft, allowing for flexible mounting and specialized mechanical actuation paths.

Q: What is the benefit of the SPDT Double Break circuitry in this model?

A: The double-break mechanism splits the electrical arc across two sets of contacts, which significantly reduces contact wear and heat generation, thereby extending the electrical life of the switch in high-cycle applications.

Q: Is the 1LS1-4PG suitable for use in wash-down environments?

A: Absolutely. With its IP67 and NEMA 4 ratings, the switch is specifically designed to withstand low-pressure water jets and immersion, making it suitable for food processing and outdoor industrial use.

Q: Does this model support international conduit standards?

A: Yes, the "PG" in the model number denotes a PG 13.5 internal thread, which is a standard European conduit size, ensuring compatibility with international cable glands and fittings.

Q: How do I verify the contact state for maintenance purposes?

A: The switch features an internal terminal block accessible via the removable front cover. You can utilize a standard multimeter to check continuity across the Normally Closed (NC) and Normally Open (NO) terminals during manual actuation.