Allen-Bradley ST3PA-A Industrial Timer With Socket Base

Allen-Bradley ST3PA-A Industrial Timer with Socket Base is a 220 VAC, 50/60 Hz on-delay timer relay designed for industrial control panels and automation systems, and is compatible with Generic / FINGLAI components. It provides an adjustable delay from 0.5 seconds to 3 minutes via an 8-pin plug-in base, with four timing selections at 0.5 s, 5 s, 30 s, and 3 min. This DPDT timer relay delivers 3 A at 250 VAC or 5 A at 28 VDC, draws up to 3 W, and offers repeat accuracy of ±0.3% (±0.05 s) and setting error of ±0.5% (±0.05 s). A front-adjustment knob and LED indicator simplify setup and status monitoring, and the unit mounts on sockets, with mounting options including socket, DIN rail, or panel, and dimensions of 50 × 40 × 57.5 mm. It operates from 0°C to 50°C with up to 95% RH non-condensing, and provides mechanical life of 1×10^6 operations and electrical life of 1×10^5 operations. Typical applications include delayed start, sequence control, interlocking, and timed switching in motor starters, conveyors, packaging equipment, HVAC, and process automation, making it a common replacement option in control systems; replacements noted include Omron H3CR-A8 Time Relay.