PSL – IOS35G – 5 A Independent Overcurrent/Short‑Circuit Time Relay, DIN‑R

The IOS35G (also marketed under PSL/DSL Electronic) is a standalone overcurrent and short-circuit time relay designed for generator and motor protection. It monitors three-phase current and activates after preset delays when thresholds are exceeded. Powered directly from the measured current (no auxiliary supply needed), it offers precise protection with field-selectable settings for both overcurrent and short-circuit events.

Key Features:

• Model: IOS35G (5 A) – Independent overcurrent/short-circuit relay  

• Detection Settings:

 – Overcurrent: 0.7–1.3 × In, adjustable

 – Short-circuit: 1.5–2.7 × In, adjustable  

• Time Delay:

 – Overcurrent timing: 1 to 30 seconds

 – Short-circuit timing: 0.1 to 3 seconds  

• Rated Current: 5 A (also available as IOS31G for 1 A)  

• Function: Independently monitors each phase; trips on any single-phase fault

• Self-Powered: Draws operating power from measured current—no external supply required  

• Contact Rating: 5 A @ 250 VAC / 5 A @ 30 VDC; solid-state reset on normal condition  

• Construction: DIN-rail enclosure (104 × 68 × 110 mm), approx. 0.8 kg, IP40 enclosure, screw terminals (2 × 2.5 mm²)  

• Standards & Ratings: 3750 V coil-contact dielectric, 10× IN short-time withstand, full duty cycle operation ()