Description
Used product. The ABB CT-ARS.11 is an electronic timer relay, code 1SVR630120R3100, from the CT-S series, with OFF-delay / de-energization delay function. It is a single-function device with 1 changeover contact (1 C/O – SPDT) and control supply 24–240 V AC/DC. The photographed code belongs to the previous ABB generation; ABB documentation confirms correspondence with the later CT-ARS.11S 1SVR730120R3100.
⚙️ Technical Specifications
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Brand: ABB
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Model: CT-ARS.11
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Code: 1SVR630120R3100
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Function: OFF-delay / de-energization delay
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A1–A2 supply: 24–240 V AC/DC
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Frequency: 50/60 Hz in AC; also operates in DC
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Timing range: 0.05 s – 10 min
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Time scales: 7 selectable ranges
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Output: 1 C/O, changeover contact 15-16-18
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Thermal current Ith: 4 A
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AC15: 3 A at 230 V AC
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DC13: 1.5 A at 24 V DC
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Contact operating voltage: up to 250 V
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Impulse withstand voltage Uimp: 4 kV
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Connection: screw terminals
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Mounting: DIN rail
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Approx. dimensions: approx. 22.5 × 78 × 102 mm
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Operating temperature: approx. −25…+60 °C
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Standards indicated: IEC/EN 61812-1 and IEC/EN 60947-5-1
⚡ Function in the Control System
The CT-ARS.11 is used to provide a timed delay at switch-off: when the command is removed, the relay maintains the switching state for the set time and then returns to the rest state. It is therefore suitable for timed control of contactors, relays, solenoid valves, fans, automation circuits, and industrial systems. The OFF-delay function is performed without the need for a separate auxiliary voltage.
🏭 Construction & Installation
The device features the characteristic compact ABB format for DIN rail mounting, with separate front selectors for Range and Time. The front also includes indications for the power supply and timing status. The visible terminals are A1/A2 for the power supply and 15-16-18 for the changeover contact.
🌐 Applications
Suitable for industrial automation, electrical panels, motor and contactor control, ventilation timing, pumps, solenoid valves, control circuits, and sequential management systems.
🛡️ Safety & Product Condition
The component is used, with normal cosmetic and handling marks visible on the external parts; no obvious damage to the housing is evident. Operation is not declared as tested. Before use, verify the power supply, time-range setting, condition of contacts 15-16-18, and correct tightening of the terminals. The connected load must comply with the electrical limits of the contact.
📦 Package Contents
1 × ABB CT-ARS.11, code 1SVR630120R3100, electronic OFF-delay timer.
🚀 Final Description
The ABB CT-ARS.11 1SVR630120R3100 is a compact and versatile industrial OFF-delay timer relay, with universal 24–240 V AC/DC supply, adjustable 0.05 s–10 min range, and 1 changeover contact. It is particularly interesting as a replacement for previous-generation ABB panels and equipment; the 1SVR630120R3100 code is in fact identified in ABB documentation as the previous version of the CT-ARS.11.
