40 µF permanent run capacitor for single‑phase motors, rated at 450 VAC with 50/60 Hz operation and a ±5% tolerance. This CAPEM40 replacement is designed as the 3919 air compressor capacitor and is compatible with AM39 and AM40 models and similar 3/4 HP hand‑carry units. The cylindrical package measures about Ø45 mm by 94 mm, features two leads with a 250 mm lead length, and mounts with an M8 × 10 screw, while the enclosure is IP54 rated for dust and splash protection. In motor run circuits, it provides the phase‑shifting capacitance required for reliable operation on standard 50/60 Hz power supplies.
