A range of one module (17.5mm) wide modular step relays with 1 or 2 NO 16A 250V AC contacts, test button with mechanical indicators, 6 functions available, AC/DC coils, identification label, clamps suitable for two 4 mm2 wires each, clamps not lined up to make wiring easier, DIN rail 46277 mount, possible to connect illuminated push buttons (by means of capacitor), in conformity with IEC 669-1 and IEC 669-2-2, approvals (according to type): IMQ, RINA, SEV, UTE
The 20 SERIES modular step relays are available in several configurations, including single‑phase (type 20.21) and double‑phase versions (types 20.22‑20.28) with up to four NO contacts. Each module is 17.5 mm wide, mounts on a DIN rail, and can be equipped with illuminated push‑buttons via an optional capacitor.
Technical specifications cover AC and DC coil versions, dielectric strength, insulation resistance, rated current and voltage, mechanical and electrical life, and maximum switching frequencies. Ordering information and coil version codes are provided for custom configurations.
| Rated current | 16 A |
|---|---|
| Rated voltage | 250 V AC |
| Maximum peak current | 30 A |
| Dielectric strength (coil to contacts) | 3500 V |
| Dielectric strength (open contacts) | 2000 V |
| Insulation resistance | >10^10 MΩ |
| Maximum switching frequency (rated load) | 900 operations/h |
| Ambient temperature range | -40 °C to +40 °C |
| Mechanical life | 300 000 operations |
The relay is rated for a continuous current of 16 A.
Both AC (50/60 Hz) and DC coil versions are offered, with nominal voltages of 8 V, 12 V, 24 V, 48 V, 110 V, 125 V, 230 V and 240 V.
The dielectric strength between coil and contacts is 3500 V.
Yes, an optional 1.5 µF capacitor (ordering code 02600) allows connection of up to ten illuminated push‑buttons.