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- Lids
- Bottoms
- Compactor Parts
- Commercial Dumpster Parts
- Roll-Off Container Parts
- Refuse Body Truck/Roll-off Hoist Parts
- Lids
- Bottoms
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Compactor Parts
Power UnitsElectrical PartsLimit/Safety/Photo/Press. SwitchesButtons/Switches/Keys/LegendsHydraulic PartsCylindersOther Compactor Parts30 MMPanels And ControlsMotorsMotor Starters / Transformers / FusesAccessories Electrical30 MM Key Switch30 MM Selector Switch30 MM Push Only Switch30 MM Legends30 MM Contacts And Replacement Keys22.5 MM
- Commercial Dumpster Parts
- Roll-Off Container Parts
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Refuse Body Truck/Roll-off Hoist Parts
Heil Replacement PartsMcNeilus Replacement PartsTarp Systems & PartsRoll-Off Hoist/Hook Hoist PartsRoll-off / Hook Hoist PartsCurrotto Can Replacement PartsCables & StrapsRollers & AccessoriesSheave Pulleys & PinsHoist CylindersContainer Securement System & PartsRoll Off Hydraulics,Filters,& PneumaticsRoll-Off ElectricalCurotto Can Replacement CylindersCurotto Can Body Replacement PartsCurotto Can Grabber Beam PartsCurotto Can Slide Assembly PartsCurotto Can Hydraulics & PneumaticsOther Manufacturer Replacement Parts
AB LIMIT SW SPR RET W/O LEVER 13 DEGREES
AB LIMIT SW AR RLR NYL .75X.28 1.19-3 RA
AB LIMIT SW SD PUSH VERT ROLR SPRING RET
AB LIMIT SW PLUNGER, SIDE PUSH 2 CIRCUIT
AB LIMIT SW ARM ROD LEVER 11.5" LONG
AB LIMIT SW ARM ROD LEVER 5" LONG
AB LIMIT SW WOBBLE STICK W/NYLON EXTENS
AB LIMIT SW AR RLR NYL 1.5X.28 1.19-3 RA
POWER UNIT, PLC 3 PH 10 HP 12 GPM W/15' CNTRLS
Part # : A.PUX.LC.3.10
4/36/2.5R/31.25 COMPACTOR CYL. (BY PASS)
Part # : C.CYL.436.BP
5/50/2.5R/42 COMPACT. CYL (BY-PASS)
Part # : C.CYL.550.BP
AB 30MM CYLINDER LOCK PUSH BUTTON (KEY SWITCH) WITH GUARDED BEZEL WITH 2 NO
Part # : C.AB30.NX970
1.25" PIN FOR COMP. CYL - UNIVERSAL ADJ. (with COLLAR, SCREW & NUT)
Part # : C.CYL.PIN.9
Compactor Limit Switches
Replacement limit switches for industrial trash compactors — ram position, end-of-stroke, door position, and cycle-control switches. The most commonly-replaced sensor switch in any compactor service-parts inventory. PRT stocks OEM-compatible limit switches for Marathon, PTR, Wastequip, Harmony, and SP Industries.
What this page covers
Limit switches tell the compactor's control system where the ram is, where the door is, and when the cycle is complete. They're the eyes of an otherwise blind hydraulic system. The end-of-stroke limit switch — the one that signals the ram has reached full extension and can retract — gets hit thousands of times a year, which is why it's the most frequently-replaced switch in commercial compactor maintenance.
PRT stocks limit switches in the standard form factors used across major compactor brands: lever-actuated, roller-actuated, plunger-actuated, and key-actuated. All are OEM-equivalent contact ratings, mounting patterns, and electrical specifications.
How to choose
Match the switch by its actuator style (lever, roller, plunger, key) and its electrical rating (typically 10A at 120/240V AC for compactor applications). The OEM part number on the existing switch translates directly to a PRT replacement.
If the existing switch is unmarked or damaged beyond identification, send PRT a photo. The actuator style is usually visually identifiable; the contact rating is standard across most compactor applications.
Limit switch types in stock
- Lever-actuated limit switchesStandard cycle-end and ram-position sensing.
- Roller-actuated limit switchesFor high-cycle applications and smooth actuation.
- Plunger-actuated limit switchesFor direct push-button-style activation.
- Key-actuated limit switchesFor door-position sensing with reliable engagement.
- Heavy-duty industrial ratings10A at 120/240V AC standard; higher ratings on request.
- OEM-equivalent mounting patternsDirect drop-in for Marathon, PTR, Wastequip, Harmony, SP.
Frequently asked questions
How often should I replace compactor limit switches?
Inspect at every quarterly service. Replace the end-of-stroke limit switch every 12-18 months in high-cycle commercial service; other limit switches typically last 3-5 years.
What's the difference between a compactor limit switch and a safety switch?
A limit switch detects position (ram, door, cycle state) for normal control. A safety switch confirms a safety-critical condition (door closed, guard in place) with fail-safe contacts. Functionally similar; the safety switch has stricter reliability requirements.
Are compactor limit switches interchangeable across brands?
Often yes — the form factor and electrical rating are largely standardized across Marathon, PTR, Wastequip, and Harmony. Mounting pattern may differ; PRT can confirm before you order.
Can I diagnose a failed limit switch in the field?
Yes, with a multimeter set to continuity. Disconnect the switch from the control circuit, actuate it, and verify the contacts open and close cleanly. Bouncy or intermittent contacts indicate worn internals — replace.