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The AT1-RT is an electronic on-delay timer relay from the ABB AT1 range with an octal plug-in base interface. It provides one timed SPDT contact plus one instantaneous SPDT contact (DPDT output), and offers seven selectable time ranges from 1 second up to 10 hours across a single 24-240 V AC/DC wide-range supply.
Seven timing ranges are selectable by a front-face rotary selector (1s / 10s / 1min / 10min / 1hr / 10hr / 0-10hr delay), and the repeat accuracy is ≤0.2% of the full scale. The wide supply voltage and LED output indication make the relay convenient for panel builders and original-equipment machine control.
Typical applications include timed starting and stopping, motor control sequences, lighting control, HVAC and general automation timing functions. The relay plugs into a standard octal relay base and is DIN-rail or panel mounted.
| Product Series | ABB AT1 timer relays |
| Model / Type Designation | AT1-RT (12-240VUC) |
| Product ID (Order No.) | 2CSK0201CH |
| Product Type | Electronic on-delay timer relay |
| Function | On-delay (energization delay) |
| Time Ranges (selectable) | 1 s; 10 s; 1 min; 10 min; 1 hr; 10 hr; 0-10 hr |
| Output Contacts | 1 SPDT timed + 1 SPDT instantaneous (DPDT) |
| Output Rating | 5 A / 250 V AC (resistive); 1250 VA |
| Supply Voltage | 24-240 V AC/DC (50/60 Hz) |
| Supply Voltage Range | 75-120% of rated |
| Accuracy (repeat) | ≤0.2% of full scale |
| Recovery Time | 100 ms |
| Mounting | Octal plug-in base; DIN-rail / panel |
| Terminal Type | 8-pin octal |
| Degree of Protection | IP20 |
| Ambient Operating Temperature | -20 to +60 °C |
| Mechanical Endurance | 10 million operations |
| Electrical Endurance | 100,000 operations (rated load) |
| Standards | EN 61812-1, UL 508, CUL, CSA, CCC, GOST, CE, RoHS |
| Dimensions (W x D x H) | 22 x 34 x 84 mm |
| Product Net Weight | 0.06 kg |
| Brand | ABB |
| Condition | New Surplus |
| Warranty | 12-month seller warranty |
Shipping & Warranty: Fast order processing with worldwide delivery available. This item is sold as New Surplus and backed by our 12-month warranty, which covers quality-related replacement or refund. Contact our team for compatibility checks, bulk pricing, or spare-parts sourcing support.
Place your order before 14:00 for earliest possible shipment handover. With round-the-clock transit operated by our partnered global logistics providers, parcels reach most international destinations following routine customs processing. Economy shipping takes 9–14 business days, while express delivery arrives in 5–8 business days, both subject to customs clearance progress.Shipping fees will be charged for all orders under USD 500, and the exact shipping cost will be determined and collected by our logistics carriers. Shipments to remote international regions will incur additional courier surcharges to offset extra cross-border transportation costs.
Factory warranty service is not applicable to this industrial control equipment, and extended warranty packages are not provided for this item.
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