Industrial HKL3400 400A 3-Pole 600 V Circuit Breaker Potential Transformer

The Industrial HKL3400 is a rugged, purpose-built circuit breaker designed for demanding 3‑phase power distribution. With a 400 A current rating, a 3-pole configuration, and a 600 V maximum voltage, this device provides reliable, coordinated protection for heavy loads in industrial environments. Listed as Part Number HKL3400, it’s the precise choice for replacement, upgrade, or new installations in power cabinets and motor control centers.

• Current rating: 400 A — supports high-load feeders with adequate fault-current capacity.
• Poles: 3 — true three-phase protection, ensuring simultaneous disconnection of all phases for safer fault clearance.
• Voltage rating: 600 V AC — compatible with standard industrial distribution systems and motor circuits up to 600 V.
• Part Number: HKL3400 — clear, traceable identification for procurement, stocking, and service records.
• Application scope: Protects large motors, feeders, and critical equipment across factories, manufacturing lines, and process facilities.
• Protection coordination: Designed to integrate with protection relays and metering arrangements, including setups that utilize potential transformers for measurement and control.

Why this HKL3400 model stands out: it delivers comprehensive three-phase protection in a compact footprint, reducing the risk of phase imbalance and equipment damage during faults. Its 600 V rating makes it suitable for a wide range of industrial power architectures, while the 3‑pole design simplifies panel wiring and modernization projects. The HKL3400 is built for reliability in environments where uptime matters and quick, predictable fault clearing is non-negotiable.

Practical use cases and guidance:

• Install as a primary protection device in 3‑phase feeders feeding large motors, conveyors, or pumps.
• Upgrade existing panels to a higher-current, three-pole solution to improve fault handling and safety margins.
• Coordinate with protective relays and, where applicable, potential transformer-based metering to monitor system health and trigger protective actions accurately.
• Ensure correct matching with conductors and bus ratings to fully leverage the 400 A capacity and 600 V compatibility.