Instrument Meter Specialties

2108 B West Magnolia Blvd
Burbank, CA 91506
Phone: 800-926-3837 FAX: 818-841-2379
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Applications

■ Electric Heating Elements

— Instant indication of heater status.

■ Power Supplies

— Signals over-current before equipment fails.

■ Machine Operation

— Instant status of motors, lamps and other loads.

■ Telecom Sites

— Monitors battery output.

Features

■ Compact, One-piece Design

— Fits in easily amongst motor starters and power supplies in crowded control panels.

■ Input Isolation

— Safer than shunt/relay combinations.

■ Output Installation

— Isolated output greatly simplifies wiring.

■ Tough

— Designed to handle harsh industrial environments.

■ Adaptive Hysteresis

— Hysteresis is 5% of setpoint, allowing closer control than fixed hysteresis switches.

■ Reliable

— Solid state design.

■ Built-in Mounting Feet

— Simple, two-screw installation allows for secure mounting.

Specifications

Dimensions

Output Isolated Dry Contact

Output Rating

■ Solid State: 0.15A @ 240VAC/DC (N.O. Only)

■ Relay: 5.0A @ 240VAC, 5.0A @ 30VDC (SPDT)

Off State Leakage < 10A

Response Time

■ 100 ms (10% above setpoint)

■ 20 ms (100% above setpoint)

Setpoint Range 4–20, 10–50 and 20–100A (DC) Jumper select (derate by √2 for AC)

Hysteresis 5% of Setpoint

Overload

■ 1,000% of range for 5 seconds

■ 200% of range indefinitely

Isolation Voltage 3kV

Frequency Range DC to 400Hz

Sensing Aperture 0.75" (19.1mm) dia.

Power Supply 20–28VAC/DC or 12VDC

Power Consumption 10VA

Case UL 94V-0 Flammability Rated

Environmental

■ –4 to 122°F (–20 to 50°C), 0–95% RH, non-condensing

■ –40 to 140°F (–40 to 60°C) (Solid State Output Only)

Ordering Information

Example: DS3-SDT-24U

DS current operated switch with SPDT relay contacts and 24VAC/DC power

supply.

Dimensions