B1DS

B1DS – Product Description

• The B1DS is a single-function ON-delay timer from EAPL’s B-Series.

• Provides adjustable delay after power is applied before switching output.

• Compact industrial design suitable for DIN-rail or panel mounting.

• User-friendly front dial with selectable time ranges for flexible use.

Key Specifications

• Function: ON-delay timer.

• Supply Voltage: Available in wide AC/DC ranges (commonly 24 V to 240 V AC and 24 V to 220 V DC in X-version models).

• Time Range: 0.6 seconds to 60 minutes (selectable via front switches/dials).

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

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

• Timing 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: >100 MΩ at 500 V DC.

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

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

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

Applications

• Delay starting of motors, pumps, or compressors to prevent inrush issues.

• Sequential start of multiple machines in an automation line.

• Control & Relay panels and MCC panels requiring ON-delay logic.

• Lighting circuits with delayed switching.

• Industrial processes where staggered or timed activation is needed.

• Transformer or DG set control panels with delayed relay operation.

Summary

• The B1DS is a reliable ON-delay timer with selectable ranges from fractions of a second up to 60 minutes.

• Offers high accuracy, repeatability, and long service life.

• Compact and rugged design for DIN-rail or panel mounting.

• Ideal for industrial automation, MCCs, transformer/DG panels, and general delay control in electrical systems.