Product Overview
Carlo Gavazzi EII Series 115 VAC Single-Phase Overcurrent Control Module
Condition
New old stock (NOS). Unused surplus in manufacturer box with intact quality seal; packaging shows light storage wear. Markings legible: Carlo Gavazzi EII C 115 500mA, 115 V~ 50/60 Hz.
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Product Overview
Carlo Gavazzi EIIC115500MA is a DIN-rail mount, single-phase overcurrent monitoring relay engineered to protect circuits and industrial equipment from excessive electrical loads. Operating on a 115 VAC control supply, this module monitors AC or DC current across three selectable base ranges from 10 mA to 500 mA. An onboard potentiometer provides fine adjustment between 20% and 100% of the selected range, while an adjustable 0.1 to 10 second delay prevents nuisance tripping caused by transient inrush currents.
Key Features
- Control supply voltage: 115 VAC, 50/60 Hz via terminals A1 and A2 (1.5 VA power consumption)
- Measuring ranges: 50 mA, 200 mA, and 500 mA base scales with 20% to 100% fine threshold adjustment
- Current input: Monitored circuit connects through terminals Y1 and Y2 for AC or DC current measurement
- Output configuration: SPDT relay contacts rated 8 A at 250 VAC maximum
- Adjustable trip delay: 0.1 to 10 seconds to bypass startup current spikes
- Latching control: Terminals Z1 and Z2 enable latching function or automatic reset
- Enclosure: IP20 rated housing designed for standard DIN rail mounting with screw terminals
- Impulse withstand: Rated 4 kV (1.2/50 µs) transient voltage resistance
Applications
- Protecting fractional horsepower motors, pumps, and actuator circuits from stall conditions or mechanical binding.
- Monitoring industrial heating elements and power resistors to quickly flag short circuits or abnormal draws.
- Building automated machine safety interlocks that disconnect power when mechanical jams occur.
- Benchtop test setups and maker automation projects requiring adjustable overcurrent cutoffs on sensitive DC or AC loads.
Frequently Asked Questions
How is the monitored circuit wired to the relay?
The monitored AC or DC current path connects directly in series across input terminals Y1 and Y2. The relay senses current passing through these terminals independently from the 115 VAC control power.
What is the function of terminals Z1 and Z2?
Terminals Z1 and Z2 control the latching feature. When bridged with a jumper or switch, the relay stays latched in the tripped state after an overcurrent event until the connection is opened. Leaving Z1 and Z2 unconnected allows the relay to reset automatically once current drops below the set point.
What operating power does this monitoring module require to function?
The unit requires an external 115 VAC, 50/60 Hz power source wired to terminals A1 and A2 to power internal logic and drive the output contact.
Dial in the trip threshold, set your delay, and let the relay take the hit before a jammed drive burns out your motor. Steady protection ready to snap onto the rail and guard your circuit.
