CT-ERS Series On Delay Timers The CT-ERS Series is an electronic timer series from the CT-S range with true ON - delay and 10 time ranges. All electronic timers from the CT-S range are available with two different terminal versions. You can choose between the proven screw connection technology (double - chamber cage connection terminals) and the completely tool free Easy Connect Technology (push-in terminals). This is denoted by either a "P" or "S" at the end of each manufacturer's part number. Rated control supply voltage 24 → 48 Vdc, 24 → 240 Vac ON - Delay timer 10 time ranges selectable between 0.05 s → 300 h Precise adjustment by front - face operating elements Screw connection technology or Easy Connect Technology available Enclosure material for highest fire protection classification Tool free mounting and demounting on DIN - rail 1 C/O (SPDT) contact 22.5 mm (0.89 in) width 2 LEDs for status indication Approvals UL 508, CAN/CSA C22.2 No.14, GL, GOST, CB scheme, CCC, CE & C-Tick