Square D HDA36070SPYP 70A 3-Pole 600 V Circuit Breaker Potential Transformer

Introducing the Square D HDA36070SPYP — a purpose-built 70 A, 3-pole 600 V circuit breaker with an integrated potential transformer. Engineered by Square D for dependable power protection, this unit combines robust fault interruption with ready-made sensing capabilities, making it an ideal choice for industrial feeders, switchgear, and panelboard installations where accurate monitoring is essential.

Why this breaker stands out

• High-performance protection: 70 A current rating with 3-pole configuration delivers reliable, coordinated interruption for three-phase systems up to 600 V.
• Integrated sensing with a potential transformer: Built-in potential transformer provides precise electrical signals for metering, relays, and protection equipment, reducing the need for external sensing devices.
• Streamlined installation: Designed to fit Square D distribution architectures, helping simplify panel assembly and maintenance in complex electrical rooms.
• Industrial-grade reliability: Square D engineering emphasizes durability and consistent performance in demanding environments, from manufacturing floors to data centers.
• Clear part traceability: Part Number HDA36070SPYP ensures you’re selecting the exact configuration needed for your 3-phase, 600 V applications.

Ideal use cases

• feeders in main distribution panels that service 3-phase loads up to 70 A at 600 V
• Panelboard upgrades where protected circuits require integrated sensing for protective relays or power metering
• Switchgear assemblies in industrial facilities, data centers, and processing plants that demand precise monitoring signals without adding extra components

What problems it solves

• Eliminates the need for separate potential transformers in many setups, reducing part count and potential wiring errors
• Provides accurate sensing signals for faster, more reliable protection and precise energy measurement
• Supports cleaner, more organized electrical layouts by combining protection and sensing in a single device

Specifications at a glance

• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Part Number: HDA36070SPYP
• Configuration: 3-pole circuit breaker with integrated potential transformer

Practical tips for installation and use

• Verify compatibility with your Square D panels and bus configurations before installation.
• Follow manufacturer torque specifications and enclosure guidelines to ensure secure connections and optimal performance.
• Plan sensor wiring to feed protection relays and metering equipment directly from the built-in potential transformer for accurate readings.

In short, the Square D HDA36070SPYP is more than a circuit breaker—it’s a compact protection and sensing solution that helps you streamline installations, improve monitoring accuracy, and maintain reliable power delivery across 3-phase 600 V systems.