CT-ERS.21S

Product Description

['Home', 'Products', 'ABB', 'Relays & Timers', 'ABB CT-ERS.21S'] Need ABB CT-ERS.21S (1SVR730100R0300)? Electronic Timer Relay for Industrial control and automation panels. Supplied with full traceability and. Contact us... Price & Availability Classified as an electronic timer relay, it is positioned as a direct replacement and service part for existing installations. It is intended for use within Industrial control and automation panels, where dependable operation and a precise fit are essential to keeping the plant running. Listed as Contact for availability, it is offered as a maintained and verified spare that supports the continued operation of the installed base. Key technical specifications include: The Manufacturer order code is 1SVR730100R0300. Its Supply voltage is rated at 24-240 V AC/DC, 50/60 Hz. For reference, the Output contacts is 2 changeover (SPDT), 250 V AC / 5 A. The Time range is 0.05 s - 300 h. Its Mounting width is rated at 22.5 mm (DIN rail). For reference, the Country of origin is Germany (DE). Notable features of this unit: CT-S series electronic timer relay, star-delta function (ER / S). Wide supply range 24-240 V AC/DC, 50/60 Hz. Two changeover (SPDT, 2 c/o) output contacts. Adjustable time range 0.05 s to 300 h with LED status. Typical applications include {'item': 'Star-delta motor starting and delay control'}, {'item': 'Time-delay switching in industrial automation'}, {'item': 'Panel building and machine control circuits'}. It is compatible with or cross-references {'item': 'ABB CT-S timer relay family (CT-T, CT-D, CT-E ranges)'}, {'item': 'ABB S800 / control cabinets and DIN-rail panels'}. Equivalent / cross-reference designation: IEC/EN 61812-1 (timer relay standard; confirm with supplier). Earlier CT-S revisions differed in marking/labels; current 1SVR730100R0300 is the documented revision. Contact supplier for legacy cross-reference. Within industrial automation and process-control environments, components of this type are relied upon to keep critical equipment operating safely and efficiently. They are typically specified where uptime, repeatability and a predictable maintenance cycle matter more than upfront cost. A electronic timer relay such as this one forms part of a larger machine or system, so correct identification and fitment directly affect the performance and safety of the whole installation. ABB parts are widely used across power generation, manufacturing, oil and gas, water and process industries, where engineering teams standardise on proven series to simplify spares planning. When selecting a replacement, confirm the exact model designation and verify that the mechanical and electrical interface matches the unit currently installed. Cross-checking the order code, mounting style and connection type against the existing device helps avoid compatibility issues and unplanned downtime during a maintenance window. Where several variants exist, the suffix often defines voltage, range or firmware, so it should be matched precisely rather than approximated. This item is offered from our active stock of current and discontinued industrial parts. Each listing is verified against the manufacturer designation before shipment so you receive the correct part for your application. Availability and lead time vary by item; our team can confirm the fastest option for your required quantity and provide a formal quotation on request. Common questions: Regarding "What function does the CT-ERS.21S perform": It is a star-delta (function S) electronic timer relay in the ABB CT-S family, used for timed motor starting and control sequences. Regarding "What supply voltage does it accept": It operates on 24-240 V AC/DC, 50/60 Hz, suitable for a wide range of control circuits. Please contact us to confirm current pricing, availability and delivery for your required quantity; volume and project pricing are available on request. The ABB CT-ERS.21S (1SVR730100R0300) is an electronic timer relay. Basic Product Information Wide supply range 24-240 V AC/DC, 50/60 Hz Two changeover (SPDT, 2 c/o) output contacts Adjustable time range 0.05 s to 300 h with LED status CT-S series electronic timer relay, star-delta function (ER / S) Technical Specifications Version & Model Difference Earlier CT-S revisions differed in marking/labels; current 1SVR730100R0300 is the documented revision. Contact supplier for legacy cross-reference. Application Scenarios {'item': 'Star-delta motor starting and delay control'} {'item': 'Time-delay switching in industrial automation'} {'item': 'Panel building and machine control circuits'} What supply voltage does it accept? It operates on 24-240 V AC/DC, 50/60 Hz, suitable for a wide range of control circuits. What are the contact ratings? It provides two changeover (SPDT) contacts rated 250 V AC / 5 A. Is a datasheet available? Yes. The CT-S timer relay range is documented by ABB (catalog 2CDC110004C0210) and multiple authorized distributors. What function does the CT-ERS.21S perform? It is a star-delta (function S) electronic timer relay in the ABB CT-S family, used for timed motor starting and control sequences. 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