| Brand | Emerson |
|---|---|
| MPN | PHC-043 |
| Type | Surge Protector |
| Model | PHC-043 |
| UPC | 630898004561 |
Check the listing for details. Emerson PHC-043 Circuit Surge Protector. Condition: New. Listed at 60.00 USD. The Emerson PHC‑043 is a rugged, compact surge protection module engineered to safeguard two-line signaling circuits—such as fire alarm horns, bells, strobes, or security system loops—operating up to 36 VDC nominal and clamping at 43 VDC. It integrates a three-stage hybrid network combining metal-oxide varistors (MOVs), silicon avalanche diodes (SADs), and series inductors to ensure both differential and common-mode protection, with ultra-low insertion loss (.