H.A.K. Pneumatic Visual Position Indicator & Explosion-Proof Limit Switch Box for Rotary Actuator NPT 2-3/4"
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Description
The APL‑410 is a rugged, explosion-proof position indicator and limit switch box designed for NAMUR-style rotary actuators. Featuring a compact aluminum housing with 2¾″ NPT cable entries, this unit includes two SPDT mechanical switches, plus a high-contrast visual dome showing OPEN/CLOSED status. It is rated for Ex d II BT6 hazardous zones and certified IP67 for dust and water protection.
Construction/Specification
| Cable Entry / Mounting | 2 ¾″ NPT threaded inlets |
| Housing | Die-cast aluminum, black polyester finish; IP67, explosion-proof Ex d II BT6 |
| Switch Configuration | 2 × SPDT mechanical limit switches (250 VAC/DC max) |
| Electrical Ratings | 15 A @ 125–250 VAC, 0.6 A @ 125 VDC, 0.3 A @ 250 VDC |
| Visual Indicator | Dome-style, 0–90° rotation, color-coded (e.g., red = CLOSED / yellow = OPEN) |
| Temperature Range | –20 °C to +80 °C |
| Certification | Ex d II BT6, IP67 (some versions IP68) |