Safety foot switch with interlock — what the ratings mean for your line
The 3SE2924-3AA20 is a SIRIUS safety foot switch with a metal enclosure rated IP65, meaning it withstands washdown and dust ingress on the factory floor — the protective cover keeps the pedal from accidental actuation when not in use. Its interlock function (latching safety circuit) together with 2 NC contacts that open on simultaneous latching means the machine cannot restart until the pedal is physically reset — a key requirement for safeguarding per IEC 61496-1. Rated 16 A at 400 V and 3 A at 24 V, this foot switch handles both high-voltage motor control circuits and low-voltage PLC inputs from the same contact block.
Sourcing and lifecycle — active production, no obsolescence risk
The metal enclosure and M20 x 1.5 cable entry match standard panel gland plates; the 2 NO + 2 NC auxiliary contact arrangement gives you both a safety channel and a status feedback channel without adding a separate relay.
Integration checklist — panel wiring and ambient limits
Operating temperature range -25 to +80 °C covers both cold storage and hot machine-side mounting without derating. Minimum actuation force of 240 N prevents false triggers from vibration or incidental contact — the pedal requires deliberate foot pressure to close the NO contacts.