Simplifies specification for ampacities over 50 amperes.
PEACHTREE CORNERS, GA, Nov 6, 2024 – Siemens presents electrical specifiers and installers with the first 3-Pole Ground Fault Circuit Interrupters (GFCIs) for enhancing electrical safety in commercial facilities. Offering ampacities of up to 100 A for powering large equipment loads in commercial workspaces, these UL and cUL-listed 3-pole interrupters are the first to deliver 5-milliamp sensitivity for helping protect personnel from electrocution hazards in accordance with the latest National Electrical Code (NEC) requirements. These devices simplify compliance for restaurants, car washes, laundromats, commercial window washing operations, and other applications where ground-fault protection is needed for wet commercial workplaces.
Expanded in 2023, NEC Article 210.8(B) specifies that all receptacles on 3-pole branch circuits 150 volts or less, up to 100 amps, require Class A GFCIs to help protect personnel from electrical hazards. For ampacities exceeding 50 amperes, this often required that electrical professionals develop complex and costly solutions using multiple devices to protect 3-pole circuits. Siemens’ new 3-pole GFCIs enable engineers, electricians, and distributors to deliver critical safety functionality using just one agency-listed, NEC-compliant device that is easy to specify, procure, install, and test.
The new 3-pole GFCIs streamline procurement, deployment, and use in multiple ways. Conventional GFCIs rely on measured differences in current-in/current-out and can thus be subject to nuisance tripping from imbalanced loads, resulting in unnecessary power disruptions to workplace equipment. Siemens 3-Pole GFCIs are insensitive to power imbalances between poles, and thus can reduce nuisance tripping to increase reliability and uptime in commercial applications. Recommended for installation by licensed electricians, Siemens 3-Pole GFCIs can also be installed on 2-pole circuits to further simplify procurement and installation logistics.
Siemens 3-Pole GFCIs are listed to UL 943 for Class A applications where 5 milliamp imbalance sensitivity is required to protect personnel, and to UL 1053 for equipment protection applications requiring 30 milliamp sensitivity. In addition, these interrupters carry a 65kA fault current rating, making them suitable for the widest range of protection applications. Compatible with all Siemens XQD circuit breaker accessories, Siemens 3-Pole GFCIs can be mounted on panels and DIN-rails, and can be configured for cable-in/cable-out applications using available NEMA 1 indoor and NEMA 3R outdoor enclosures.
Learn more about Siemens 3-Pole Ground Fault Circuit Interrupters.
