Siemens WB3225 Qj Enclosure 3-phase 4-wire Breaker

Product Description

The SIEMENS WB3225 is a QJ-series circuit breaker enclosure designed for 3-phase, 4-wire electrical distribution systems. This enclosure houses QJ-frame molded case circuit breakers and provides a protective, code-ready mounting solution for branch circuit and feeder protection applications. At 23.656 pounds and measuring 27.165 inches long by 11.417 inches wide by 7.087 inches tall, it is sized for panel and switchboard installations where a standalone enclosure is required. Licensed electricians and electrical contractors are the primary installers.

This enclosure is suited for commercial and industrial electrical installations where a QJ-frame breaker must be mounted in a dedicated enclosure rather than inside a larger switchboard or panelboard assembly. It accommodates 3-pole, 4-wire configurations typical of three-phase wye-connected distribution. Common applications include subpanel feeder protection, machine disconnect enclosures, and dedicated branch circuit protection in light commercial facilities.

Key Features

• Designed for QJ-frame molded case circuit breakers in a 3-phase, 4-wire configuration
• Standalone enclosure design supports dedicated breaker mounting outside of a main panel
• Large footprint — 27.165 inches x 11.417 inches x 7.087 inches — accommodates QJ-series breaker hardware
• Substantial 23.656-pound construction indicates heavy-gauge steel enclosure build
• UPC 78364312382 for precise procurement and inventory identification

Compatibility

Designed as an OEM-style enclosure for Siemens QJ-frame molded case circuit breakers in 3-pole, 4-wire electrical distribution configurations.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the supply circuit completely and verify absence of voltage before mounting or wiring the enclosure. Ensure the enclosure is properly grounded and that all conduit entries are sealed appropriately for the installation environment. The enclosure must be mounted securely to a structural surface capable of supporting its weight.

Technical Specifications

• Configuration: 3-Phase, 4-Wire (3P4W)
• Breaker Series: QJ Frame
• Length: 27.165 inches
• Width: 11.417 inches
• Height: 7.087 inches
• Weight: 23.656 pounds
• UPC: 78364312382

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: WB3225