239

233 is a 200 series voltage monitor/band (window) voltage relay. It controls supply voltage for equipment sensitive to supply tolerance and offers protection against under- and over-voltage conditions. This voltage monitoring relay senses voltage level in single phase AC and DC circuits. Sensed voltage also serves as supply voltage. Two independent levels of voltage (upper and lower) can be set. The 233 has an active output during normal operation and turns off when a fault is sensed. Loss of supply voltage therefore is a recognized fault. Built-in hysteresis eliminates chattering at the transition point. SPDT (Form C) contacts allow various connection options. Red and green LED indicators allow quick identification of various fault conditions.

• Monitors voltage range of 48 to 276VAC
• Adjustable time delay up to 10 seconds to avoid nuisance tripping
• Minimum voltage setting as a percentage of the maximum voltage
• Red and green LEDs indicate 3 conditions, normal operation and 2 fault conditions
• DIN rail mounting, meets EN 60255-6, EN 61010-1, UL standards
• Power consumption (ACmax) is 1.2VA, IP 40 from front panel protection degree
• Time delay range from 0 to 10s adjustable
• Relay output form is SPDT Form C (AgNi)
• 16A/AC rated current, 4000VA/AC, 384W/DC switching capacity
• Operating temperature range from -20°C to +55°C