ABB CT-ARS.21 Electronic Timer

We will arrange delivery within 3-5 days after receiving the payment.

Our express delivery: DHL and FedEx.

Quality packing for each product

Destination country all taxes & duty to be paid by buyer

Only part of the brand and model, if you have other product needs, please contact us.

1. Product Description

The ABB CT-ARS.21 is a high-precision electronic timer relay used in industrial control systems for timed switching of circuits. It features a wide voltage range, high reliability, and multiple delay modes, suitable for applications such as delay-on, delay-off, cyclic timing, and flashing control. It is widely used in automation production lines, motor control, lighting control, and distribution systems.

2. Technical Specifications

• Model: CT-ARS.21

• Type: Electronic Timer Relay

• Supply Voltage: 24–240 V AC/DC

• Relay Output: 1 NO (normally open) contact

• Time Range: 0.05 sec – 100 hours (adjustable)

• Time Accuracy: ±1%

• Operating Modes: ON-delay, OFF-delay, cyclic timing, flashing

• Mounting: DIN rail 35 mm

• Operating Temperature: –20°C to +60°C

• Protection Rating: IP20

• Housing Material: Flame-retardant plastic

• Mechanical Life: ≥ 10^6 operations

• Electrical Life: ≥ 10^5 operations

3. Features & Advantages

• Multiple timing modes to meet various industrial control requirements

• High-precision timing ensures reliable control actions

• Wide voltage adaptability (AC/DC 24–240 V)

• Easy DIN rail mounting for fast installation and replacement

• Strong anti-interference ability for stable industrial operation

• Compact, durable design with flame-retardant housing and long relay life

4. Application Areas

• Industrial automation control systems

• Motor start/stop delay control

• Lighting and illumination timing control

• Power distribution control systems

• Automated production lines and assembly equipment

• Control cabinets and instrument panel timing applications

5. Precautions

1. Verify supply voltage and wiring before powering on.

2. Avoid high humidity or corrosive environments.

3. Ensure proper ventilation during installation to prevent overheating.

4. Do not plug or unplug the relay under power.

5. Periodically check relay contact wear and replace if necessary.

6. Ensure relay contact ratings are not exceeded to avoid overload.

The structure and details of the product：

Please make an inquiry for more models

ABB ZCU-12 3AXD50000005751

ABB ACS880-01-087A-3

ABB MS132-6.3  1SAM350000R1009

ABB CA4-10 1SBN010110R1010

ABB RLM01

ABB 1SDA065622R1

ABB ACS800-04-0030-3+E200+K466+Q950+R700

ABB 1SVR730884R400

ABB CM-MSS  1SVR730712R1200

ABB DSQC258 3HAA3563-AUA POWERSUPPLY

ABB 3HAA3563-AUA

ABB DSQC259 3HAB2205-1

ABB 3HAB2205-1

ABB DSQC266C

ABB DSQC266G

ABB DSQC266H

ABB DSQC266T

ABB DSQC301 3HAA3573-ABA

ABB 3HAA3573-ABA

ABB DSQC313

ABB DSQC313 3HAB2213-1/3

ABB 3HAB2213-1/3

ABB DSQC314A

ABB DSQC314B

ABB DSQC317

ABB DSQC322

ABB DSQC324 3HAB5957-1/3

ABB 3HAB5957-1/3

ABB DSQC324

ABB DSQC325 3HAB2241-1

ABB 3HAB2241-1

ABB DSQC325

ABB DSQC326 3HAB2242-1

ABB DSQC326

ABB 3HAB2242-1

ABB DSQC327 3HAC17971-1

ABB 3HAC17971-1

ABB DSQC327     7.26

ABB DSQC327A

ABB PSR37-600-70

ABB PSR45-600-70

ABB 2CKA002083A0343

ABB DSQC328 3HAC17970-1

ABB 3HAC17970-1

ABB PDQ22-FBP.0 1SAJ240200R0050

ABB PCD232A101

ABB ES1000C

Other best-selling products：