MA4IMA12

The MA4IMA12 is a modular Parallel Transient Voltage Surge Suppressor (TVSS), multi-stage suppression circuit consisting of field-proven, fast-acting 34mm metal oxide varistors (MOVs). A surge suppression path is provided for each mode, line-to-neutral (L–N), line-to-ground (L–G) and neutral-to-ground (N–G). Each surge suppression mode is individually fused and uses circuitry with thermal cut-outs to isolate the TVSS and ensure shutdown in the event of MOV damage during sustained over-voltages—even when operated on high fault current power systems. The unit provides EMI/RFI noise attenuation. An On-line diagnostics continuously monitor the device status and LEDs signal a loss of a suppression circuit.

• Individually fused suppression modes
• Thermal cut-out
• Solid state bidirectional
• Push-to-test on-line diagnostic display
• Backplane for easy module installation
• UL 1449 recognized assembly
• Front panel alarm with enable/disable switch

Applications

Safety, Power Management, Industrial, Motor Drive & Control