Height Limit Switch - Nussbaum - 80.035 — a direct-fit replacement electrical control component. Ordering the electrical control component from us gets you the OEM piece that matches the lift, not an aftermarket knock-off that is close but not the same. Specifications Part number: ALS-7453-52 Type: Genuine OEM electrical control component The one spec you cannot get wrong on lift electrics is voltage. A 110-volt motor and a 220-volt motor are not interchangeable, and neither are their contactors and overloads. Single-phase versus three-phase matters just as much. Read the data tag on the motor and match voltage, phase, and horsepower exactly — the wrong one either won't run, runs weak, or burns up the first time it's asked to lift. Electrical parts fail by heat and by contacts. A push-button's contacts pit and stop making a clean connection; a contactor's points burn and weld or chatter; a wire lug loosens, arcs, and cooks. Motors fail on windings, bearings, or a start capacitor. The tells are a lift that runs intermittently, won't start, trips the breaker, hums without turning, or greets you with the smell of hot varnish. Related parts for this lift The parts below are commonly ordered alongside this one — cables, sheaves, seals, and hardware wear on similar schedules, and most repairs go faster when the whole set is done in one visit. Contactor - Nussbaum - 50.026 UP Switch - Nussbaum - 85.23 Replacing your electrical control component Servicing the safety cutouts — limit switch, overhead shut-off, overload — is about confirming the lift stops on its own when it's supposed to, not just that it runs. Replace the failed device, then test each cutout deliberately. Since these are what make the lift safe to operate, the step-by-step procedure is worth following start to finish. Not sure on the procedure? Find your lift in our parts lookup or call and we will walk you through it. Find the right part for your lift Landed here but not 100% sure it is your part? Grab the model and serial from the data plate and open our parts lookup for the visual breakdown — the manufacturer-style drawing with every item numbered so you can match yours exactly. Plate missing? our guide to finding your model number helps, and we identify lifts from photos every week if you would rather ask. Signs of an electrical fault The electrical triage list: dead lift — check breaker, disconnect, and incoming voltage first; intermittent — hunt a loose or corroded connection; hums but won't turn — capacitor or seized pump; trips the overload — motor or binding pump drawing high current; burnt smell — find the overheated point before running again; chattering contactor — low coil voltage or worn points. Power off before you probe or tighten anything. Parts commonly replaced at the same time Plan the electrical repair as a circuit, not a single part. The components around a failure often share its age, and doing them together while power is off is safer and cheaper than repeat visits. Give us your lift's configuration and we will assemble the matched set. Safety notes Before the cover comes off, the power comes off — and gets verified off. Lift controls tie the motor, the interlocks, and the shutoff together, so a careless connection can make a lift move when it should not. Match the diagram, respect the safety circuit, and get help on anything outside your comfort zone. Before you order Ordering tip: electrical components are specific to the lift's voltage and phase, so read the plate before you buy. A 208-230V single-phase lift and a three-phase version of the same model do not share the same contactor or motor. Send the markings off the old part and we will confirm the match. Ordering the right revision Before this goes in the cart, grab two things off your lift: the model number and the serial number, both on the manufacturer's plate. The serial matters more than most people expect — lift makers revise components between production runs without renaming the lift, and the run your serial falls in determines which revision of this part is correct. If you are working from a failed part rather than a plate, measure what you have and photograph how it mounts. Send that to us along with the lift brand, and we will check it against the same parts breakdowns our own techs use in the field before you commit to the order. Why buy your electrical control component from Auto Lift Services We install, inspect, and repair automotive lifts every week — the ALS-7453-52 is a part we handle in the shop, not a random SKU we drop-ship. The phone answers if you have a question mid-install — call 800-674-9302 — and every part ships genuine, no aftermarket substitution unless you ask for it.
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