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1SVR730120R3100 ABB CT-ARS.11S Timer True OFF-Delay 1C/O
ABB CT-ARS.11S electronic true OFF-delay time relay with 10 time ranges from 0.05 s to 300 h, 24–240 V AC/DC supply and one changeover relay contact.
£83.98
Why Choose the ABB CT-ARS.11S True OFF-Delay Timer?
The ABB CT-ARS.11S is a single-function electronic time relay from the ABB CT-S timer range, designed to provide reliable true OFF-delay timing for industrial automation and electrical control systems. It provides a true delay-on-break function without requiring an auxiliary voltage, allowing the relay output to remain energised for a defined period after the control signal is removed.
The CT-ARS.11S provides 10 selectable time ranges from 0.05 s to 300 h and operates from a universal 24–240 V AC/DC control supply. Front-face adjustment allows the required delay to be configured for machinery, control panels and automated processes.
The timer features 1 c/o (SPDT) relay contact rated at 250 V / 4 A. Its compact 22.5 mm wide housing uses screw connection technology with double-chamber cage terminals and is suitable for DIN rail installation in industrial control cabinets.
Key Advantages
- Reliable true OFF-delay electronic time relay for industrial automation.
- True delay-on-break operation without auxiliary voltage.
- 10 selectable time ranges from 0.05 s to 300 h.
- Universal 24–240 V AC/DC control supply.
- 1 c/o (SPDT) relay contact for flexible switching.
- 250 V / 4 A rated output contact.
- Compact 22.5 mm wide DIN rail housing.
- Screw connection technology with double-chamber cage terminals.
- Precise front-face adjustment of the selected time range.
- Sealable transparent cover available as an accessory to help prevent unauthorised adjustments.
Key Features
- ABB CT-S timer range.
- True OFF-delay (delay-on-break) timing function.
- Operation without auxiliary voltage.
- 10 selectable time ranges from 0.05 s to 300 h.
- 24–240 V AC/DC rated control supply.
- 1 c/o (SPDT) contact.
- 250 V / 4 A rated output contact.
- 50/60 Hz AC or DC operation.
- Screw connection technology with double-chamber cage connection terminals.
- Front-face adjustment for accurate time selection.
- DIN rail mounting for compact control cabinet installation.
- LED status indication.
- Sealable transparent cover available as an accessory.
Reliable True OFF-Delay Timing for Industrial Automation
The ABB CT-ARS.11S provides true OFF-delay timing for applications where a relay output needs to remain active for a defined period after the control signal is removed. Because the timing function operates without an auxiliary voltage, it provides a practical solution for delayed switch-off applications in industrial control systems.
With ten selectable time ranges covering 0.05 s to 300 h, the CT-ARS.11S can accommodate both short machine-control delays and extended process timing requirements. Its single changeover relay contact provides flexible interfacing with contactors, signalling circuits, machinery and other industrial control equipment.
Typical Applications
- Industrial automation and control panels.
- Motor and contactor control circuits.
- Machine sequencing and timed control.
- Conveyor and production machinery control.
- Delayed switch-off applications.
- Process automation and equipment sequencing.
- Industrial signalling and alarm circuits.
- Cooling and ventilation run-on control.
- Lighting and timed shutdown circuits.
- Control systems requiring true OFF-delay operation without auxiliary voltage.
Technical Specifications
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| Contacts | 1 C/O | |
|---|---|---|
| Mounting Type | DIN rail | |
| Device Type | Single-function timer | |
| Timing Function | Off-delay | |
| Timing Range | 0.05 s – 300 h | |
| Switching Current (A) | 4 A | |
| Series | CT-S Time Relays | |
| Product type | Electronic time relay | |
| Timer relay type | True OFF-delay | |
| Timing function | True OFF-delay (delay-on-break) | |
| Auxiliary voltage | Not required | |
| Time range | 0.05 s–300 h | |
| Number of time ranges | 10 | |
| Control supply voltage | 24–240 V AC/DC | |
| Output | 1 c/o (SPDT) contact | |
| Rated operational voltage | 250 V | |
| Rated operational current | 4 A | |
| Rated frequency | 50 / 60 Hz / DC | |
| Rated insulation voltage | 500 V input circuit / output circuit, 300 V between output circuits | |
| Maximum operating voltage UL/CSA | 300 V AC output circuit | |
| Protection rating | IP50 | |
| Operating temperature | -25–+60 °C | |
| Storage temperature | -40–+85 °C | |
| Mounting type | DIN rail mounting | |
| Terminal type | Screw terminals, double-chamber cage connection | |
| Housing width | 22.5 mm | |
| Dimensions (W × H × D) | 22.5 × 85.6 × 103.7 mm | |
| Net weight | 0.106 kg | |
| Housing material | UL 94 V-0 |
Frequently Asked Questions
What is the ABB CT-ARS.11S used for?
The CT-ARS.11S is an electronic true OFF-delay time relay used to keep a control output active for a defined period after the control signal is removed in industrial automation and control systems.
What timing function does the CT-ARS.11S provide?
The CT-ARS.11S provides a true OFF-delay (delay-on-break) timing function without requiring an auxiliary voltage.
What time range does the CT-ARS.11S provide?
The CT-ARS.11S provides 10 selectable time ranges covering 0.05 s to 300 h.
What control supply voltage does the CT-ARS.11S require?
The CT-ARS.11S operates from a universal rated control supply of 24–240 V AC/DC.
How many outputs does the CT-ARS.11S have?
The CT-ARS.11S has one changeover (1 c/o) SPDT relay contact, rated at 250 V / 4 A.
Trusted by Automation Engineers Worldwide
ABB CT-S true OFF-delay time relays provide dependable timed switching for industrial automation systems where controlled delay-on-break operation, universal AC/DC supply compatibility and compact DIN rail installation are required.
