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abb ct-sde timer star delta 0.3-30s 1no 1nc
ABB CT-SDE electronic timer relay with star-delta change-over function, 0.3–30 s timing range and 110–130 V AC control supply for industrial motor starting applications.
Why Choose the ABB CT-SDE Electronic Timer Relay?
The ABB CT-SDE is a compact and reliable electronic timer relay from the ABB CT-E timer relay range, designed for accurate star-delta motor starting control in industrial automation, electrical control panels and OEM equipment. It provides a dedicated star-delta change-over timing function for controlled motor starting sequences.
The CT-SDE offers a simple and efficient timing solution with a compact 22.5 mm housing, DIN rail mounting capability and screw terminal connections. Its single-function design provides straightforward configuration for repeat industrial applications requiring reliable star-delta switching control.
With an adjustable time range of 0.3–30 s, a rated control supply voltage of 110–130 V AC and a 1 c/o relay output rated at 250 V / 4 A, the ABB CT-SDE provides dependable timing control for motor starting systems and industrial automation applications.
Key Advantages
- Compact electronic timer relay for industrial automation applications.
- Star-delta change-over timing function for controlled motor starting.
- 0.3–30 s adjustable time range for flexible starting sequences.
- 110–130 V AC control supply for industrial control systems.
- Space-saving 22.5 mm DIN rail mounting design.
- Reliable relay output for motor control circuits.
Key Features
- ABB CT-E electronic timer relay series.
- Single-function star-delta change-over operation.
- 0.3–30 s adjustable starting time.
- 110–130 V AC rated control supply voltage.
- 1 c/o (SPDT) relay output.
- 250 V / 4 A switching capability.
- Fixed star-delta change-over delay.
- LED indication for operational status.
- 35 mm DIN rail mounting compatibility.
Reliable Motor Starting Control for Industrial Systems
Electronic timer relays such as the ABB CT-SDE provide accurate timing functions for controlling star-delta motor starting sequences. By managing the transition between star and delta connections, the timer relay supports controlled motor starting in industrial applications.
The ABB CT-E timer relay range is designed for OEM equipment manufacturers, panel builders and industrial automation engineers requiring compact, reliable and easy-to-integrate timing solutions.
Typical Applications
- Industrial motor control panels.
- Star-delta motor starters.
- Automation sequencing systems.
- Machine control circuits.
- OEM equipment and control cabinets.
- Industrial automation systems.
Technical Specifications
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| Supply Voltage | 110–127 V AC/DC | |
|---|---|---|
| Contacts | 1NO + 1NC | |
| Mounting Type | DIN rail | |
| Timing Function | Star-delta | |
| Timing Range | 0.3 s – 30 s | |
| Switching Current (A) | 4 A | |
| Device Type | Star-delta timer | |
| Coil / Supply Voltage | 110 V AC, 115 V AC, 120 V AC | |
| IP Rating | IP20 | |
| Manufacturer | ABB | |
| Series | CT-E Timer Relays | |
| Model | CT-SDE | |
| Ordering code | 1SVR550210R4100 | |
| Product type | Electronic timer relay | |
| Timing function | Star-delta change-over | |
| Time range | 0.3–30 s | |
| Rated control supply voltage | 110–130 V AC | |
| Output | 1 c/o (SPDT) contact | |
| Rated operational current AC-12 | 4 A at 230 V | |
| Rated operational current AC-15 | 3 A at 230 V | |
| Rated operational current DC-12 | 4 A at 24 V | |
| Rated operational current DC-13 | 2 A at 24 V | |
| Terminal type | Screw terminals | |
| Mounting type | DIN rail mounting | |
| Protection rating | IP20 | |
| Dimensions (W × H × D) | 22.5 × 78 × 78.5 mm | |
| Weight | approx. 0.068 kg |
Frequently Asked Questions
What is the ABB CT-SDE used for?
The ABB CT-SDE is an electronic timer relay used for star-delta motor starting control applications in industrial automation systems.
What timing function does the ABB CT-SDE provide?
The CT-SDE provides a star-delta change-over timing function for controlling motor starting sequences.
What is the adjustable time range of the CT-SDE?
The ABB CT-SDE has an adjustable time range of 0.3–30 s.
What supply voltage does the ABB CT-SDE require?
The CT-SDE operates with a rated control supply voltage of 110–130 V AC.
What type of output does the ABB CT-SDE have?
The CT-SDE features a 1 c/o (SPDT) relay output rated for industrial control switching applications.
Trusted by Industrial Automation Professionals
ABB CT-E timer relays are widely used in industrial automation and control systems to provide accurate timing functions, reliable switching and compact integration into electrical panels.
