Egis Mobile Electric 5601B PT Series 30A Time Delay Relay

The EGIS 5601B (PT Series) is a solid-state, self-contained time delay relay (TDR) rated for 30 A at 12 V, designed to manage auxiliary loads and prevent battery drain in systems where power draw must be delayed after engine shutdown. It uses advanced digital/FET circuitry for reliable operation across varied temperature and voltage ranges, combining voltage sensing and ignition sensing in a compact, waterproof package.

Key Features

• 30 A single-output capacity — handles moderate auxiliary loads without needing external relays.

• Ultra-low off-state current draw (≈1.3 mA) — minimizes battery drain when the relay is not active.

• Adjustable off-time delay from ~15 minutes up to ~8 hours — allows flexibility in how long the load remains powered after shutdown.

• Flexible control modes — activation can be triggered by ignition (key), alternator voltage sensing, or a combination.

• Diagnostic feedback via LEDs — onboard multi-color indicators help with installation verification and troubleshooting.

• Protection features — includes over-voltage, under-voltage, and thermal overload safeguards to protect both the relay and connected equipment.

• Sealed, rugged construction — built to withstand harsh environments and allows mounting in varied locations.

• Digital / FET-based architecture — fewer moving parts means improved reliability and longevity compared to mechanical relays.

• 4-year warranty — demonstrates manufacturer confidence in durability and performance.

Applications & Use Cases

The EGIS 5601B is ideal for systems that need controlled power after engine shutdown, while protecting battery integrity. Possible applications include:

• Fleet vehicles — maintaining power for data terminals, cameras, radios, or computing gear for a set time after engine off.

• Emergency  vehicles — allowing equipment (e.g. scanners, communications, mobile data) to finish tasks (downloads, logging) after the engine is removed from service.

• Marine / RV  — powering accessories like navigation electronics, lighting, or instrumentation for a defined period after engine shutdown, without risking battery depletion.

• Mobile workstations / trailers — allowing controlled shutdown of auxiliary equipment, such as surveillance, lighting, or sensors, while ensuring battery protection.

• Industrial / remote equipment — managing load power-off timing for sensors or controls in backup systems, field equipment, or unstaffed installations.