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1SVR730210R3300 ABB CT-SDS.22S Star-Delta Timer Relay 2 N/O
ABB CT-SDS.22S electronic star-delta timer relay with 2 N/O outputs, 24–48 V DC / 24–240 V AC supply and adjustable timing from 0.05 s to 10 min.
£57.62
Why Choose the ABB CT-SDS.22S Star-Delta Timer Relay?
The ABB CT-SDS.22S is a compact and reliable electronic star-delta timer relay designed to provide controlled motor starting sequences in industrial control, automation and electrical systems. As part of the ABB CT-S timer relay range, it provides a dedicated star-delta timing function with two normally open outputs for controlling the transition between star and delta motor configurations.
The CT-SDS.22S provides 7 selectable time ranges from 0.05 s to 10 min, together with a fixed 50 ms transition time. This allows the relay to control the timing sequence of star-delta motor starters while helping limit starting current and provide a controlled transition to normal motor operation.
With a rated control supply voltage of 24–48 V DC / 24–240 V AC and 2 N/O output contacts rated at 250 V / 4 A, the CT-SDS.22S provides reliable switching and timing control in industrial automation and motor control panels. Its compact 22.5 mm housing is designed for straightforward DIN-rail mounting.
Key Advantages
- Compact star-delta timer relay for industrial motor starting applications.
- 7 selectable time ranges from 0.05 s to 10 min for flexible timing control.
- 50 ms fixed transition time between the star and delta switching stages.
- 24–48 V DC / 24–240 V AC control supply for versatile installation.
- 2 N/O output contacts rated at 250 V / 4 A.
- Compact 22.5 mm wide DIN-rail housing for efficient control panel installation.
Key Features
- ABB CT-S timer relay range.
- Star-delta timing function.
- 2 N/O output contacts.
- 24–48 V DC / 24–240 V AC rated control supply.
- 0.05 s to 10 min selectable time range.
- 7 selectable timing ranges.
- 50 ms fixed transition time.
- Screw connection technology with double-chamber cage connection terminals.
- Compact DIN-rail mounting design.
- Three LEDs for clear operating status indication.
Reliable Star-Delta Motor Starting Control
Star-delta timer relays such as the ABB CT-SDS.22S provide controlled sequencing for three-phase motor starters. During starting, the motor can initially operate in a star configuration to reduce starting current before the timer initiates the transition to delta operation.
The CT-SDS.22S combines selectable timing periods with a fixed 50 ms transition time, helping provide a defined switching sequence between the star and delta stages. Its compact DIN-rail format and screw terminal connections allow straightforward integration into industrial motor control panels and automation systems.
Typical Applications
- Three-phase motor starting systems.
- Industrial motor control panels.
- Machine control and automation systems.
- Pumps and pumping equipment.
- Fans and ventilation systems.
- Compressors and industrial machinery.
- HVAC equipment and process control systems.
Technical Specifications
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| Contacts | 2NO | |
|---|---|---|
| Mounting Type | DIN rail | |
| Device Type | Star-delta timer | |
| Timing Function | Star-delta | |
| Timing Range | 0.05 s – 10 min | |
| Switching Current (A) | 4 A | |
| Series | CT-S Time Relays | |
| Product type | Electronic timer relay | |
| Timer relay type | Star-delta | |
| Output | 2 N/O contacts | |
| Contact rating | 250 V / 4 A | |
| Rated control supply voltage | 24–48 V DC / 24–240 V AC | |
| Time range | 0.05 s to 10 min | |
| Number of time ranges | 7 | |
| Transition time | 50 ms fixed | |
| Terminal type | Screw terminals | |
| Mounting type | DIN rail mounting | |
| Width | 22.5 mm | |
| Height | 85.6 mm | |
| Depth | 103.7 mm | |
| Product net weight | 0.114 kg | |
| Protection rating | Housing IP50, terminals IP20 | |
| Operating temperature | -25 to +60 °C | |
| Storage temperature | -40 to +85 °C | |
| Rated frequency | 50 / 60 Hz / DC | |
| Rated insulation voltage | 500 V input circuit / output circuit | |
| Rated impulse withstand voltage | 4 kV | |
| Standards | IEC/EN 61812-1, UL 508, CAN/CSA C22.2 No. 14 | |
| ABB order code | 1SVR730210R3300 |
Frequently Asked Questions
What is the ABB CT-SDS.22S used for?
The ABB CT-SDS.22S is an electronic star-delta timer relay used to control the timing sequence of three-phase motor starters in industrial automation and motor control systems.
What timing range does the CT-SDS.22S provide?
The CT-SDS.22S provides 7 selectable time ranges from 0.05 s to 10 min.
What supply voltage does the CT-SDS.22S require?
The CT-SDS.22S operates with a rated control supply voltage of 24–48 V DC / 24–240 V AC.
What type of output does the CT-SDS.22S have?
The timer relay has 2 N/O output contacts rated at 250 V / 4 A.
What is the transition time of the CT-SDS.22S?
The CT-SDS.22S has a fixed 50 ms transition time between the star and delta switching stages.
Trusted by Industrial Automation Engineers
ABB CT-S timer relays are designed to provide reliable, flexible timing control for industrial automation, motor starting, electrical control panels and machine control applications.
