20 SERIES Modular step relays 16 A 1 or 2 Pole 16 A Step relays for direct 35 mm rail (EN 60715) mounting • 17.4 mm wide • Test button with mechanical indicators • Choice of 7 switching sequences • AC coils and DC coils • Identification label • Possible to connect illuminated push buttons with the additional part 026.00 • 35 mm rail (EN 60715) mount • Cadmium free contact material 20.21/22/24/26/27/28/23 Screw terminal • Single phase switch 1 NO (SPST-NO) • 35 mm rail (EN 60715) mount • Double phase switch • 35 mm rail (EN 60715) mount • Double phase switch 1NO+1NC (SPST-NO+SPST-NC) For UL ratings see: “General technical information” page V For outline drawing see page 3 Contact specification Contact configuration Rated current/Maximum peak current Rated voltage/ Maximum switching voltage Nominal lamp rating: fluorescent tubes with electronic ballast W fluorescent tubes with electromechanical ballast W LV halogen or LED with electronic ballast W LV halogen or LED with electromechanical ballast W Minimum switching load Standard contact material Coil specification Nominal voltage (UN) Rated power AC/DC Operating range Technical data Mechanical life AC/DC Electrical life at rated load in AC1 Minimum/Maximum impulse duration 0.1 s/1 h (according to EN 60669) 0.1 s/1 h (according to EN 60669) 0.1 s/1 h (according to EN 60669) Insulation between coil and contacts (1.2/50 µs) Ambient temperature range

20 SERIES Modular step relays 16 A Ordering information Example: 20 series relay, 35 mm rail (EN 60715) mount, double phase switch, 2 NO 16 A contacts, coil rated at 12 V DC, AgSnO2 contacts. Technical data Insulation If the coil is operated for a prolonged period of time, adequate ventilation of the relays must be provided - suggested gap of 9 mm between adjacent relays.

20 SERIES Modular step relays 16 A Example: 230 V AC supply voltage. Example: 24 V AC supply voltage. Outline drawings 20.21 Screw terminal

20 SERIES Modular step relays 16 A Accessories Module for use with illuminated push-buttons Type 026.00 Sealed construction, 7.5 cm insulated flexible wire termination. Example of wiring diagram of type 026.00 This module is necessary when using between 1 and a maximum of 15 illuminated push buttons in the coil circuit (Each 1.5 mA max, 230 V AC). It must be connected in parallel to the coil of the relay. Adaptor for panel mounting, 17.5 mm wide Sheet of marker tags, plastic, 24 tags, 9 x 17 mm Separator for rail mounting, plastic, 9 mm wide