FE PETRO® Dispenser Hook Isolation Device (STP-DHI / STP-DHIB)
The FE PETRO® STP-DHI / STP-DHIB Dispenser Hook Isolation Device provides critical protection for submersible pump control systems by isolating up to eight dispenser hook signals of the same grade. It prevents cross-phasing and electrical feedback between dispensers, meeting stringent international electrical codes including NEC 514-3 (2002).
Key Features
- 8x optically isolated inputs from dispenser hook circuits – prevents relay board damage
- 1x fused STP output – feeds the submersible pump control system
- Prevents false STP activation due to voltage leakage or multiple dispenser feedback
- LED indicators for source power and active hook signals
- Surge protected: 300V surge protection included
- Code compliant: NEC 514-3 and other international standards
- Factory-wired option: Can be supplied integrated with smart or standard control boxes
- Retrofit compatible: Easily integrates into new or existing installations
Technical Specifications
- Enclosure Dimensions: 215mm (L) x 127mm (W) x 76mm (H)
- Power Supply:
- STP-DHI: 120V, 30VA input; 8x 120V 10mA hook inputs
- STP-DHIB: 240V, 30VA input; 8x 240V 10mA hook inputs
- Output Protection: 250V 1A fast-acting fuse
- Ambient Temperature: Up to 49°C (120°F)
- Compatible With: All FE PETRO® and third-party submersible pump controllers
Compliance & Certifications
- Meets NEC 514-3 (2002) and other global electrical codes
- ISO 9001 Certified Manufacturer – Franklin Fueling Systems
- Contact factory for full approval details
Models Available:
STP-DHI – 120V version
STP-DHIB – 240V version