Electronic circuit breakers create multiple, lower-power circuits from one power supply
Pisa series electronic circuit breakers (ECB) have added six Pisa-M four-channel ECB models. They efficiently create multiple, lower-power circuits from one power supply to reduce costs, wiring, complexity and space requirements. They protect components from overcurrent and short-circuits, wiring from overheating, and connected power supplies from overloads.
Pisa-Ms are compact with a 22.5 mm width that fits easily into densely packed control cabinets, freeing space for other devices. They can be integrated into either 12 V or 24 V systems without manual configuration due to an automatic-voltage detection feature.
The push-in connectors on the front of Pisa-Ms allow quick and tool-less installation, while two-color LEDs show the status of each output channel in real-time, and a button on each channel allows easy on/off switching and resetting.
Pisa-M’s variations include 4ADJ modules that are adjustable, allowing each output channel to be set to the required current value from 1 to 8 A. If a plug-and-play device with fixed currents is needed, Pisa-M offers versions with fixed-output current settings, including 2 A, 4 A, 6 A, 8 A and NEC Class 2. These modules provide up to four protected NEC Class 2 loads from one power supply. For example, Pisa-M-4CL2 automatically adjusts tripping current based on the system voltage. It delivers 3.75 A at 24 VDC (92 W maximum) per channel and 4.85 A at 12 VDC (60 W maximum) per channel.