Description

The GE UR1HH is a high-density terminal block module designed as a critical interconnect component for General Electric’s UR-series protective relays and control systems. Engineered for seamless integration with devices like the Multilin 869 and 650 platforms, this module provides secure, reliable wiring termination points in space-constrained panels. The GE UR1HH features 48-position screw terminals with tin-plated copper alloy contacts, ensuring low-impedance connections (<0>

As part of GE’s hardened connectivity solutions, the GE UR1HH incorporates gas-tight contacts and bifurcated clamping mechanisms that prevent loosening under vibration (tested to 15g RMS). The flame-retardant polyamide housing (UL94 V-0 rated) withstands temperatures from -40°C to 105°C, making it suitable for switchgear applications where arc-flash resistance is critical. The GE UR1HH includes integrated test ports for live circuit measurements without disconnection, aligning with NFPA 70E safety standards. This module serves as the backbone for signal distribution between relays, CT/PT inputs, and control circuits in mission-critical power systems.

GE UR1HH

Technical Specifications

Main Features and Advantages

The GE UR1HH delivers superior connectivity through its dual-compression termination technology: A self-adjusting cage clamp maintains constant pressure on conductors, while a separate tension spring counteracts thermal cycling effects. This eliminates cold creep in copper wires, reducing hotspot risks by 90% in high-current applications. For maintenance safety, each terminal integrates fused test points compliant with CAT III / 300V measurement standards.

Space optimization: At just 8.2mm per terminal pitch, the GE UR1HH achieves 30% higher density than industry equivalents. Color-coded phase barriers (optional) prevent accidental cross-phasing during commissioning. The patented contact design ensures 100% gas-tight connections, passing 1000+ temperature shock cycles (-40°C ↔ +105°C) without performance degradation. Field-replaceable modules allow single-terminal repairs without system shutdown. Crucially, the GE UR1HH includes integrated transient voltage suppression, protecting downstream relays from induced lightning surges up to 4kV.

Application Field

The GE UR1HH is indispensable in energy distribution systems requiring fail-safe wiring integrity. In substation protection panels, it interconnects Multilin relays (e.g., 869, 650) with current transformers, enabling precise differential protection for transformers and busbars. For industrial power management, the module routes signals between UR-series motor protection relays and PLCs in steel mill drives and mining conveyor systems, where vibration resistance prevents signal dropout.

Renewable energy deployments leverage the GE UR1HH‘s UV stability in solar combiner boxes, handling string monitoring currents under direct sunlight exposure. Data center applications utilize its 105°C rating for UPS battery monitoring circuits. In rail traction power, the module’s EN 45545-2 fire compliance ensures safety in tunnel environments. The GE UR1HH also serves nuclear facilities, meeting IEEE 323 seismic qualifications for Class 1E systems.

GE UR1HH

Related Products

GE UR1HK: 96-position variant for high-density applications

GE F35: UR-series feeder protection relay (primary device)

GE IS2000 module: Analog input expansion for UR platforms

GE T8461: Test plug adapter for UR1HH test points

GE 369-HI: Motor management relay with compatible terminations

GE DS200 series: Drive system terminal accessories

GE IC693ACC300: DIN rail mounting kit

GE UR8HH: 8-position compact version for I/O modules

GE EnerVista UR Setup: Configuration software