Catalog
Self Test GFCI controller compliant with UL943
Key Features
• Auto monitoring test function required by UL943
• Self syncing internal oscillator adjusts to AC mains frequency to guarantee full resolution
• Typical 575 µA Quiescent Current @ 11 V
• Tiered trip times by the level of ground fault
• Under voltage detection
Description
AI
The NCS37014 is a UL943 compliant signal processor for GFCIapplications with self test. The device integrates a flexible powersupply (including a 12 V shunt and two 3.3 V internal seriesregulators), differential fault, and grounded−neutral detection circuits.Self test is monitored at start up and then every 17 minutes.
