What sits in the panel
The 61F-11NR is an Omron 61F-series relay unit — the compact plug-in module used with 61F-level electrodes and probe sets to switch a pump or solenoid based on conductive-liquid level in a tank or sump. Listed as Active on the manufacturer's record, the part is at the mature stage of its production cycle, which for the 61F family means long-running fit-for-purpose supply rather than a recent release. Packaged in bulk, the unit is kitted for panel-build quantities rather than single-unit retail — the panel builder or MRO buyer ordering against a BOM gets the format their line is set up for, not a point-of-sale blister pack.
Fit, function, and what the series gives you
Inside the 61F family the -11NR suffix identifies a specific contact/coil configuration of the 11-pin plug-in relay unit; the series as a whole targets conductive-liquid level sensing through paired electrodes, with the relay module providing the switching output that the field wiring drives a contactor or solenoid from. The 11-pin octal-style base footprint is the standard DIN-rail/socket mount for the family — the same socket backplane that holds the probe wiring and the load-side output. Deployment context: a typical install sits in a control panel beside a pump starter, with the probe leads landing on the socket terminals and the output contacts wired into the coil of the motor contactor — so a low-level cutoff or high-level alarm trips the pump through the relay rather than directly through the electrode circuit. The mature-lifecycle status means long-term spares availability for existing tank farms, water-treatment skids, and boiler-feed applications that were designed around the 61F footprint years ago.
Sourcing posture
Active on the official record at the mature stage — no end-of-life notice, no official successor mapped.