CT-APS.21P

Name: CT-APS.21P
Brand: ABB
SKU: CT-APS.21P

The ABB CT-APS.21P is an OFF-delay electronic time relay with 10 time ranges (0.05 s to 300 h). It uses Easy Connect Technology and is ideal for industrial applications requiring precise timing control.

Product ModelCT-APS.21P

Material Number1SVR740180R0300

Product ID85209

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Universal Voltage Compatibility DescriptionThe CT-APS.21P operates on a continuous rated control voltage of 24-240 V AC/DC, ensuring worldwide use regardless of the supply voltage.
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2. Easy Connect Technology DescriptionFeaturing maintenance-free Easy Connect Technology with push-in terminals, the CT-APS.21P simplifies installation and reduces setup time.
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3. Precise Timing Control DescriptionWith 10 time ranges from 0.05 seconds to 300 hours, the CT-APS.21P offers precise timing control for a variety of industrial applications.
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4. Compact Design DescriptionThe compact design of the CT-APS.21P allows for easy mounting on DIN rails, making it ideal for space-constrained environments.
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Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Product Net Width

22.5 mm

Product Net Height

85.6 mm

Product Net Depth / Length

103.7 mm

Product Net Weight

0.135 kg

Timer Relay Type

OFF-Delay

Time Range

0.05 s ... 300 h

5. High Fire Protection Classification DescriptionThe housing material of the CT-APS.21P is classified as UL 94 V-0, ensuring the highest fire protection standards are met in industrial settings.

6. Reliable Operation DescriptionThe CT-APS.21P features a repeat accuracy of less than ±0.2% and operates within a wide ambient temperature range of -40°C to +60°C, ensuring reliable operation under various conditions.

7. Status Indication DescriptionThe device includes two LEDs for status indication: a green LED for control supply voltage/timing and a yellow LED for output relay status, providing clear operational feedback.

8. Versatile Application DescriptionDesigned for industrial applications, the CT-APS.21P can be used in a wide range of scenarios where precise timing control is required, including automation, control systems, and more.

Rated Control Supply Voltage (Us)

Rated Operational Voltage

Auxiliary Circuit 250 V

Rated Frequency (f)

50 / 60 Hz DC

Output

2 c/o (SPDT) contacts

Terminal Type

Screwless Terminals

Rated Operational Current AC-12 (Ie)

(230 V) 4 A

Rated Operational Current AC-15 (Ie)

(230 V) 3 A

Rated Operational Current DC-12 (Ie)

(24 V) 4 A

Rated Operational Current DC-13 (Ie)

(24 V) 2 A

Minimum Switching Capacity

12 V 100 mA

Rated Impulse Withstand Voltage (Uimp)

Input Circuit 4 kV Output Circuit 1 / Output Circuit 2 4 kV

Rated Insulation Voltage (Ui)

Input Circuit / Output Circuit 500 V Output Circuit 1 / Output Circuit 2 300 V

Degree of Protection

Housing IP50 Terminals IP20

Overvoltage Category

III

Pollution Degree

Short-Circuit Protective Devices

Output Circuit NC - F Type Fuses 6 A Output Circuit NO - F Type Fuses 10 A

Electrical Durability

AC-12 100000 cycle

Mechanical Durability

30000000 cycle

Connecting Capacity

Flexible with Ferrule 2x 0.5 ... 1.5 mmÂ² Flexible with Insulated Ferrule 2x 0.5 ... 1.5 mmÂ² Flexible 2x 0.5 ... 1.5 mmÂ² Rigid 2x 0.5 ... 1.5 mmÂ²

Wire Stripping Length

8 mm

Mounting Position

1 ... 6

Mounting on DIN Rail

TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715 TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715

Standards

CAN/CSA C22.2 No.14 IEC/EN 63000 IEC/EN 61812-1 UL 508

Maximum Operating Voltage UL/CSA

Output Circuit 300 V AC

Contact Rating UL/CSA

B300

Connecting Capacity UL/CSA

Flexible 2x 18-16 AWG Rigid 2x 20-16 AWG

Pilot Duty UL/CSA

B300

Flammability According to UL94

V-0

Ambient Air Temperature

Operation -25 ... +60 Â°C Storage -40 ... +85 Â°C

Maximum Operating Altitude Permissible

Without Derating 2000 m

Object Classification Code

ETIM 7

EC001439 - Timer relay

ETIM 8

EC001439 - Timer relay

ETIM 9

EC001439 - Timer relay

eClass

V11.0 : 27371605

UNSPSC

39122329

E-Number (Finland)

2712227

E-Number (Norway)

4187953

E-Number (Sweden)

4033139

Manufacturer ID

1SVR740180R0300