Striebel & John 7RE 3FB Complete Metering Transformer Panel WF37KK21, 300 A, 400 V, 3-Phase, 5-Pole Busbar, 30x10 mm, IP2XC

Engineered for 400 V AC three-phase networks, this metering transformer panel handles up to 300 A with a robust 5-pole busbar system (30 x 10 mm cross-section). It accommodates one 3-point or eHZ meter alongside three current transformers, making it a complete solution for transformer metering in commercial and industrial installations.

Overview

The Striebel & John 7RE 3FB complete metering transformer panel (model WF37KK21) is a factory-assembled unit designed for current transformer metering applications. It integrates all necessary components—voltage and current terminal blocks, busbar system, and mounting provisions—into a single sheet-steel enclosure ready for cabinet installation. The panel complies with DIN VDE 0603-1, DIN 43870-1, VDE-AR-N 4101, and VDE-AR-N 4102, ensuring adherence to German metering standards.

What stands out

• Rated current of 300 A and rated voltage of 400 V AC for demanding three-phase metering.
• 5-pole busbar system with 30 x 10 mm cross-section for reliable power distribution.
• Supports one 3-point or eHZ meter and three current transformers simultaneously.
• IP2XC protection class when installed in a suitable enclosure.
• Includes voltage and current terminal blocks for straightforward connections.
• Compliant with key VDE standards for metering installations.

Technical details

• Panel type: Metering transformer panel
• Application: Current transformer metering
• Number of meter positions: 1 (3-point or eHZ)
• Number of transformer positions: 3
• Rated current (In): 300 A
• Rated voltage (Un): 400 V AC
• Number of phases: 3
• Busbar system: 5-pole
• Busbar rated current: 300 A
• Busbar cross-section: 30 x 10 mm
• Protection class: IP2XC
• Mounting type: Cabinet installation
• Material: Sheet steel
• Network type: TN-S, TN-C-S
• Meter mounting type: 3-point
• Included components: Voltage and current terminal blocks
• Connection technology: Screw terminals
• Standards compliance: DIN VDE 0603-1, DIN 43870-1, VDE-AR-N 4101, VDE-AR-N 4102

Our verdict

A robust and compliant metering transformer panel that simplifies installation for three-phase current transformer metering. Its high current rating and integrated busbar system make it a dependable choice for commercial and industrial applications.