B1DH-Q

B1DH-Q – Product Description

• The B1DH-Q is a Power OFF Delay Timer from EAPL’s B-Series.

• Provides delay operation after the power supply is switched off.

• Designed for DIN-rail or panel mounting in compact enclosures.

• Front panel includes a rotary dial for precise time setting and LED indicator for power status.

Key Specifications

• Function: Power OFF Delay Timer.

• Supply Voltage: Wide operating range (24 V to 240 V AC and 24 V to 220 V DC in X-Version).

• Time Range: Adjustable from 0.6 seconds to 60 minutes (via front dial and range selector).

• Output: 2 change-over (C/O) relay contacts, rated 5 A at 250 VAC / 28 VDC resistive load.

• Power Consumption: Approx. 5 VA (AC) or 1 W (DC).

• Accuracy:

  • Setting accuracy: ±10% of full scale ±100 ms.

  • Repeat accuracy: ±1% ±100 ms.

  • Recovery time: Minimum 100 ms.

• Environmental Ratings:

  • Operating temperature: –10 °C to +55 °C.

  • Storage temperature: –25 °C to +80 °C.

  • Humidity: Up to 85–95% RH at 40 °C.

• Service Life:

  • Mechanical: ≥1 million operations (no load).

  • Electrical: ≥100,000 operations at rated load.

• Insulation Resistance: >100 MΩ at 500 V DC.

• Dielectric Strength: Up to 2.5 kV AC between input and output; 1.5 kV AC between relay contacts and control; 1.0 kV AC across non-continuous relay contacts.

• Terminals: Screw-type with self-lifting clamps.

• Dimensions: Approx. 45 mm (W) × 75 mm (H) × 116 mm (D).

Applications

• Provides delayed disconnection in motor circuits for safe shutdown.

• Useful in transformer and DG set applications requiring controlled OFF delay.

• Employed in pumps, compressors, and fans to allow safe venting or cooling after power is cut.

• Control and Relay panels (C&R) and MCC panels for OFF delay logic.

• Automation and process machinery needing timed delay before de-energization.

Summary

• The B1DH-Q is a reliable Power OFF Delay Timer with selectable time ranges up to 60 minutes.

• Offers precision control, repeatable accuracy, and robust relay outputs.

• Compact and durable design suitable for industrial automation and electrical panels.

• Ideal for safe shutdown applications in motors, DG sets, pumps, fans, and transformer control.