McDonnell & Miller RB-24SE-L Boiler Low Water Cut-Off, 3/4", Replaces RB-24E-L

RB-24E-L Boiler Low Water Cut-Off by McDonnell & Miller delivers reliable protection for residential boilers. This probe-type low water cutoff uses solid-state/electronic actuation to detect low-water conditions and provide automatic reset, helping prevent dry-fires and equipment damage.

Designed for easy installation with a 3/4 inch threaded port, the RB-24E-L supports 24 VAC input and delivers a stable 2 A current rating for dependable operation. Its operating range includes water temperatures up to 250°F and ambient temperatures to 120°F, with a water pressure rating of 160 PSI. This UL-listed unit is intended for residential boiler protection and includes a burner control harness for quick hookup.

• Type: Probe-style low water cutoff with solid-state/electronic actuation
• Port: 3/4 inch threaded connection
• Electrical: 24 VAC input, 2 A current rating, ~2.5 VA
• Performance: Temperature rating 120°F ambient / 250°F water; 160 PSI water pressure
• Safety: UL-listed for US and Canada; automatic reset
• Inclusions: Burner control harness
• Sensitivity: Probe sensitivity 15,000 Ω