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ABB 1SVR730210R3300 CT-SDS.22S

ABB 1SVR730210R3300 (CT-SDS.22S) is a star-delta electronic timer relay from the ABB CT-S timer series. It is designed for automatic star-delta motor starting applications, providing controlled switching from star connection to delta connection after a preset delay.

Product Description

The ABB CT-SDS.22S is a single-function electronic time relay featuring a star-delta timing function. It provides 7 adjustable time ranges from 0.05 seconds to 10 minutes with a fixed transition time of 50 ms between star and delta switching.

The relay supports a wide control supply voltage range of 24–48 V DC and 24–240 V AC, making it suitable for various industrial control panels and motor starter systems.

Technical Specifications

Key Features

• Star-delta motor control function for reducing motor starting current.
• Wide voltage compatibility for AC and DC control systems.
• Adjustable timing ranges suitable for different motor sizes and applications.
• Compact DIN rail design for easy installation in control cabinets.
• Reliable switching performance with ABB CT series timer technology.
• Optional transparent sealable cover helps prevent unauthorized adjustments.

Applications

ABB CT-SDS.22S timer relays are commonly used in:

• Industrial motor starter panels
• Pump and fan control systems
• Conveyor systems
• HVAC equipment
• Machine automation systems
• Low-voltage switchgear assemblies
• Factory automation control cabinets

Conclusion

The ABB 1SVR730210R3300 CT-SDS.22S is a reliable and compact star-delta timer relay designed for industrial motor starting applications. With flexible voltage input, adjustable timing functions, and robust DIN rail installation, it provides an effective solution for protecting motors and improving starting performance in automation and electrical control systems.