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1SVR740211R2300 ABB CT-SDS.23P Star-Delta Timer Relay 2N/O
ABB CT-SDS.23P electronic star-delta timer relay with 7 selectable time ranges from 0.05 s to 10 min, fixed 50 ms transition time and 2 n/o relay contacts for 380–440 V AC control supply applications.
£68.58
Why Choose the ABB CT-SDS.23P Star-Delta Timer?
The ABB CT-SDS.23P is a reliable electronic star-delta timer relay designed for controlled motor starting and switching in industrial automation, motor control panels and electrical control systems. As part of the ABB CT-S timer range, it provides a dedicated star-delta change-over function with two normally open relay outputs.
The CT-SDS.23P provides 7 selectable time ranges from 0.05 s to 10 min, allowing the star-to-delta transition to be configured for the requirements of the motor and application. A fixed 50 ms transition time provides the defined interval between the star and delta switching stages. :chatgpt-content-reference{index="0"}
With a rated control supply of 380–440 V AC, 2 n/o contacts and maintenance-free Easy Connect push-in terminals, the CT-SDS.23P is designed for straightforward integration into suitable motor control circuits. Its compact 22.5 mm wide DIN-rail housing and front-face adjustment support convenient installation and configuration. :chatgpt-content-reference{index="1"}
Key Advantages
- Reliable star-delta timer relay for motor control applications.
- 7 selectable time ranges from 0.05 s to 10 min.
- Fixed 50 ms star-to-delta transition time.
- Designed for 380–440 V AC control supply applications.
- 2 n/o relay contacts for star-delta switching control.
- Maintenance-free Easy Connect push-in terminals simplify installation.
- Compact 22.5 mm wide DIN-rail housing.
Key Features
- ABB CT-SDS.23P star-delta timer relay.
- Dedicated star-delta change-over function.
- 7 selectable time ranges.
- 0.05 s to 10 min timing range.
- Fixed 50 ms transition time.
- 380–440 V AC rated control supply.
- 2 n/o relay contacts.
- Relay contacts rated at 250 V / 4 A.
- Maintenance-free Easy Connect push-in terminals.
- Precise timing adjustment through front-face operating controls.
- Compact 22.5 mm wide housing.
- 3 LEDs for status indication.
- Tool-free DIN-rail mounting and removal.
Reliable Star-Delta Control for Industrial Automation
Star-delta timer relays are used in motor starting circuits where a suitable three-phase motor is initially connected in a star configuration before changing over to delta operation. The ABB CT-SDS.23P provides the timing function required to coordinate this sequence in suitable industrial motor control systems.
The CT-SDS.23P combines seven selectable timing ranges with a fixed 50 ms transition time and two normally open relay outputs. Its 380–440 V AC control supply, compact DIN-rail housing and push-in terminals make it suitable for integration into compatible control panels and automation equipment.
Typical Applications
- Three-phase motor starting circuits.
- Star-delta motor control panels.
- Industrial automation and motor control systems.
- Machine tools and production machinery.
- Pumps, fans and compressors with suitable star-delta motor arrangements.
- Conveyor and material-handling equipment.
- OEM machinery and industrial control equipment.
- Motor sequencing and electrical control applications.
Technical Specifications
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| Contacts | 2NO | |
|---|---|---|
| Mounting Type | DIN rail | |
| Device Type | Star-delta timer | |
| Timing Function | Star-delta | |
| Switching Current (A) | 4 A | |
| Series | CT-S Time Relays | |
| ABB order code | 1SVR740211R2300 | |
| Product type | Electronic star-delta timer relay | |
| Product group | 310926-Timer Relays | |
| Timing function | Star-delta change-over | |
| Time ranges | 7 | |
| Time range | 0.05 s to 10 min | |
| Transition time | 50 ms fixed | |
| Rated control supply voltage | 380–440 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Output | 2 n/o contacts | |
| Contact rating | 250 V / 4 A | |
| Terminal type | Easy Connect push-in terminals | |
| Mounting type | DIN rail mounting | |
| Product width | 22.5 mm | |
| Product height | 85.6 mm | |
| Product depth | 103.7 mm | |
| Product net weight | 0.112 kg | |
| Operating temperature | -25 to +60 °C | |
| Storage temperature | -40 to +85 °C | |
| Protection rating | IP50 | |
| Rated insulation voltage | 500 V |
Frequently Asked Questions
What is the ABB CT-SDS.23P used for?
The CT-SDS.23P is an electronic star-delta timer relay used to control the timing sequence between star and delta motor connections in suitable three-phase motor starting applications.
What timing range does the CT-SDS.23P provide?
The timer provides 7 selectable time ranges from 0.05 s to 10 min.
What is the transition time of the CT-SDS.23P?
The CT-SDS.23P provides a fixed 50 ms transition time between the star and delta switching stages.
What supply voltage does the CT-SDS.23P require?
The CT-SDS.23P operates from a rated control supply of 380–440 V AC.
How many relay outputs does the CT-SDS.23P have?
The timer has 2 n/o relay contacts, providing the switching outputs required for star-delta control circuits.
Trusted by Automation Engineers Worldwide
ABB CT-S timer relays provide dependable timing and switching functions for industrial automation, motor control and electrical control applications.
