A mechanical limit switch with an adjustable metal lever and large roller for position detection and travel control. The metal housing provides a removable cover and accessible screw-terminal connections.
Dimensions in mm. Roller: diameter 50 mm, thickness 6.2 mm. Adjustable arm length: 35-70 mm, 1 mm pitch. Two diameter 5.2 mm through holes. Rod fastening: M4 plate screw; mounting: M6 hexagonal-hole screws. Cover screws: 2 x M3; head-cover screws: 4 x M3. Preserve clearance for roller travel and cable entry.
| Item | Specification |
|---|---|
| Model | HL-5391 |
| Product type | Adjustable roller-lever mechanical limit switch |
| Contact arrangement | 1 NO + 1 NC, self-resetting |
| Actuator | Adjustable metal lever with large roller |
| Housing | Metal enclosure with removable cover |
| Degree of protection | IP65 |
| Operating speed | 5 mm/s to 0.5 m/s |
| Rated frequency | 50/60 Hz |
Operating-characteristic values apply at a lever length of 31.5 mm.
| Characteristic | Value |
|---|---|
| Operating force, OF (maximum) | 7.35 N |
| Release force, RF (minimum) | 0.98 N |
| Pre-travel, PT (maximum) | 20 degrees |
| Over-travel, OT (minimum) | 50 degrees |
| Movement differential, MD (maximum) | 12 degrees |
Current ratings in amperes. NC = normally closed; NO = normally open. Select the rating for the actual voltage and load type.
| Rated voltage | Resistive NC / NO | Lamp NC / NO | Inductive NC / NO | Motor NC / NO |
|---|---|---|---|---|
| 125 V AC | 5 / 5 | 1.5 / 0.7 | 3 / 3 | 2 / 1 |
| 250 V AC | 5 / 5 | 1 / 0.55 | 3 / 3 | 1.5 / 0.8 |
| 12 V DC | 5 / 5 | 3 / 3 | 4 / 4 | 3 / 3 |
| 24 V DC | 5 / 5 | 3 / 3 | 4 / 4 | 3 / 3 |
| 125 V DC | 0.4 / 0.2 | — | — | — |
| 250 V DC | 0.4 / 0.2 | — | — | — |
| Condition | Limit / basis |
|---|---|
| Surge current, NC | 24 A or less |
| Surge current, NO | 12 A or less |
| AC inductive load | Power factor: 0.4 minimum |
| DC inductive load | Time constant: 7 ms maximum |
| Lamp-load inrush basis | 10 times steady-state current |
| Motor-load inrush basis | 6 times steady-state current |
| Characteristic | Value |
|---|---|
| Mechanical operating frequency | 120 operations/minute |
| Electrical operating frequency | 30 operations/minute |
| Initial contact resistance | 25 milliohms maximum |
| Ambient temperature | -5 to +65 degrees C, without icing |
| Ambient humidity | 35-95% RH |
| Vibration resistance | 10-55 Hz, 1.5 mm double amplitude |
It uses an adjustable metal roller lever with a large roller for mechanical position and travel detection.
The contact arrangement is one normally open and one normally closed contact (1 NO + 1 NC), with a self-resetting mechanism.
Use the Electrical Load Ratings table for the actual voltage, load type and contact. Resistive, lamp, inductive and motor loads have different ratings.
Match the lever length and roller position to the operating cam. Allow the required travel and clearance; the operating-characteristic table uses a 31.5 mm lever length.
Check the mounting dimensions, roller path, cable entry, sealing, electrical load and NO/NC wiring. Installation and maintenance should be performed with the circuit isolated.
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