True RMS 3-Phase Monitor

21/SG

The MODEL 25 True RMS 3-Phase Monitor, SKU 25SG, delivers critical protection and operational oversight for industrial electrical systems. Its broad input voltage capability, spanning 80-550 VAC, ensures compatibility across various power configurations. The monitor provides a robust 10A @ 240V AC resistive output, facilitating reliable control of connected equipment. Precision is a core attribute, evidenced by a repeat accuracy of ± 0.5% under consistent operating conditions. Engineered for longevity, the device boasts an electrical relay life of 100,000 minimum operations at its rated load. Environmental resilience is key, with effective operation from -20°F to +130°F and tolerance for 0-97% humidity without condensation. Installation is streamlined via DIN Rail 35mm mounting. This monitor contributes to enhanced system integrity and reduced downtime through its consistent performance and protective features.

Universal 3Ph Monitor

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21-sg

Specifications

ContactsSilver with gold flash contacts for low current
Input Voltage (VAC)80-550 Volts
Input Current (Amps)1mA
Input Frequency50/60Hz (400Hz optional with jumper)
Input DC Power24 Volts, 2 watts
Output Rating (Resistive)10A @ 240V AC
Output Rating (General Use)4A @ 120V AC
Output Rating (General Use)2A @ 240V AC
Output Rating (Pilot Duty)C300
Start-up Delay5 secs. Min. or Automatic reset delay setting (to allow for solid lock)
Repeat Accuracy± 0.5% (fixed conditions)
Reset TypeManual or Automatic
Expected Relay Life (Mechanical)10 million operations
Expected Relay Life (Electrical)100,000 min. at rated load
Operating Temperature-20°F to +130°F
Humidity Tolerance0-97% w/o condensation
Enclosure MaterialLexan 920 Polycarbonate
Enclosure Flammability RatingUL 94 V-0 1.5 mm
UL File NumberUL E45329
MountingDIN Rail 35mm
Display Accuracy+/- 0.5%
High Voltage Set Point RangeLow setpoint + 1% to 550V in 0.5V steps
High Trip Delay0 to 20.0 seconds in 0.1Sec steps
Low Voltage Set Point Range80 to High Setpoint -1% in 0.5V steps
Low Trip Delay0 to 20.0 seconds in 0.1Sec steps
Relay Operation OptionsSeparate High/Low Relays, DPDT
Relay Operation on Fault OptionsDe-energize on fault, Energize on fault, Hysteresis set, Unbalance set, Phase Loss set, Reverse Phase set
Restart OptionsAutomatic or Manual
Automatic Restart Delay Range0 to 300.0 Seconds in 0.1 Second steps
Warranty5-year Unconditional Warranty

FAQs

What is the input voltage range for the 25SG True RMS 3-Phase Monitor?
The 25SG monitor accepts an input voltage range of 80-550 Volts AC.
What are the output contact ratings for the 25SG monitor?
The output contacts are rated for 10A @ 240V AC (resistive) and 4A @ 120V AC (general use).
What are the environmental operating limits for the 25SG True RMS 3-Phase Monitor?
The monitor operates reliably within a temperature range of -20°F to +130°F and tolerates 0-97% humidity without condensation.