HONEYWELL LSA4A3K-2B Product Description

Overview

HONEYWELL LSA4A3K-2B is presented as a Honeywell MICRO SWITCH HDLS heavy-duty limit switch for machine motion, travel end, guard interlock and position detection in industrial equipment. Public Honeywell and RS records confirm the comparable HDLS model LS4A3K-2B as an adjustable rotary lever limit switch with SPDT contacts, IP67 sealing and 240 V AC 10 A switching rating. The supplied reference LSA4A3K-2B differs by the inserted A after LS; the exact suffix variant, actuator and contact rating should be verified against the switch label or Honeywell catalog before application.

Features

The comparable LS4A3K-2B HDLS switch uses an adjustable rotary lever actuator and SPDT contact configuration. RS distributor data lists switching current 10 A, switching voltage 240 V AC, IP67 protection rating, and epoxy-coated die-cast zinc housing. The HDLS series uses a rugged metal housing with sealed rotary actuation, phosphate-treated surfaces and epoxy paint for corrosion resistance, metal anchors in the basic contact block for durability, and chrome-silicon compression springs for high and low temperature operation.

Honeywell HDLS series references list sealing to NEMA 1, 3, 4, 6, 6P and 13 and IP67 protection, with 30 mm by 60 mm mounting centers. Approved standards include UL, CSA, CE, UKCA and CCC where marked, and relevant switch standards EN60947-5-1, IEC947-5-1, AC15, A300 or A600, DC13 and Q300. RS lists country of origin as the United States.

Because the supplied model is LSA4A3K-2B rather than the confirmed LS4A3K-2B model, exact contact arrangement, actuator type, contact current and voltage rating, cable entry or conduit thread, mounting dimensions, operating force, operating temperature and mechanical life should be checked against the Honeywell datasheet or original switch label. Safety interlock or guard circuits should use a switch configuration certified for the intended safety function; this description should not be treated as a safety-rated switch rating claim.

Specs

Brand: HONEYWELL, Honeywell Technologies / MICRO SWITCH Series: HDLS heavy-duty limit switch Supplied model: LSA4A3K-2BConfirmed comparable model: LS4A3K-2BProduct type: Heavy-duty limit or position switch Actuator: Adjustable rotary lever on comparable LS4A3K-2B record Contact configuration: SPDT on comparable record Switching current: 10 A on comparable record Switching voltage: 240 V AC on comparable record Protection rating: IP67 on comparable record Housing material: Epoxy-coated die-cast zinc on comparable record Housing sealing references: NEMA 1, 3, 4, 6, 6P, 13 and IP67 per HDLS series references Mounting centers: 30 mm × 60 mm per HDLS series references Approvals: UL, CSA, CE, UKCA, CCC where marked per HDLS series references Standards: EN60947-5-1, IEC947-5-1, AC15, A300 or A600, DC13, Q300 per distributor references Country of origin: United States per RS comparable record Exact operating temperature: Unconfirmed for LSA4A3K-2B; verify Honeywell datasheet Product status: Legacy Honeywell HDLS limit switch spare for existing machine or panel installations

Principle

A heavy-duty limit switch detects machine movement when the lever or actuator is contacted by a moving machine cam, carriage, door, guard or lever. Actuator motion operates the internal snap-action contact block, opening or closing the SPDT contact circuit. The contact signal is wired to a PLC input, relay, motor starter, safety circuit, indicator or equipment control circuit to indicate position, end of travel, door or guard state, or to trigger an interlock, stop or control action.

The HDLS housing and sealed actuator protect the contact block against dust, water, oil and industrial contamination where the IP67 or NEMA rating matches the installed environment. Replacement should verify the actuator style, lever length or roller option, contact configuration, contact rating, cable entry, mounting hole pattern, operating direction, operating force and wiring. For guard, interlock or stop circuits, the original machine safety documentation and certified switch configuration must be followed rather than a general limit-switch description.

Applications

HONEYWELL LSA4A3K-2B would be used for machine limit position detection, travel end stopping, carriage or slide position sensing, door and guard interlocking, conveyor and production machine motion feedback, packaging machinery, material handling, machine tools, presses, elevators, hoists, tooling fixtures, process equipment and general industrial control. In existing HDLS or LS-series installations, the switch serves as a replacement position switch spare matched to the original actuator, mounting hole pattern, contact wiring and control circuit.