Kirsch + Trier – KIW‑257 – Overcurrent Relay Module, 0–20 A / 0–10 s, 3103020566

The Kirsch + Trier KIW‑257 (P/N 3103020566) is an analog overcurrent protection relay module with adjustable setpoints for current threshold and delay. Designed for integration into control systems or industrial equipment, it provides timed overcurrent detection and relay output switching. Settings are adjustable via front-panel dials from 0–20 A and 0–10 seconds.

Key Features:

• Manufacturer: Kirsch + Trier

• Model: KIW‑257

• Part Number: 3103020566

• Function: Overcurrent detection and relay triggering

• Adjustable Current Threshold: 0–20 A

• Adjustable Delay Time: 0–10 s

• Relay Outputs: 3 relays (marked F2, HGR, etc.)

• Input Components: HEF4093BP logic IC, trimpots, discrete components

• Mounting: PCB module, through-hole, with labeled terminal header connections

• Applications: Custom OEM control panels, industrial machinery, overcurrent detection systems