Description
Product Overview
The SQUARE D H321N is a high‑performance 30 A current switch engineered for 240 V three‑phase industrial environments. Built to meet the rigorous standards of modern manufacturing, this switch combines a compact footprint with a rugged enclosure that resists dust, moisture, and mechanical impact. Its NEMA‑rated housing ensures safe operation in panels where space is at a premium, while the precision‑molded contacts deliver consistent current monitoring and interruption. The device features a clear labeling system, a screw‑type terminal block for secure wiring, and a snap‑in design that simplifies panel integration. With a package dimension of 16.02 × 7.87 × 5.16 inches and a weight of just 2.4 ounces, the H321N balances portability with durability, making it an ideal choice for a wide range of industrial applications.
Usage
Designed for use in control panels, motor starters, and automation systems, the H321N excels in environments that demand reliable current monitoring and rapid fault isolation. It is perfectly suited for factories that operate heavy machinery, processing plants that require precise power management, and renewable energy installations where three‑phase power distribution is critical. The switch can be installed by electricians and maintenance technicians with basic training, thanks to its intuitive wiring layout and clear terminal markings. Whether it is used to protect a variable‑frequency drive, monitor a conveyor system, or safeguard a welding station, the H321N provides the confidence that power will be controlled safely and efficiently.
Why Choose Us
Choosing the SQUARE D H321N means selecting a product backed by decades of industry expertise and a reputation for quality. Square D, a leader in industrial electrical solutions, manufactures this switch in facilities that adhere to ISO‑9001 quality management standards, ensuring each unit meets exacting performance criteria. The H321N undergoes rigorous testing for overload, short‑circuit, and environmental resistance, guaranteeing long‑term reliability even in harsh conditions. In addition, our dedicated technical support team is available to assist with installation, troubleshooting, and maintenance, providing customers with peace of mind throughout the product lifecycle. With a proven track record reflected in a 4.6‑star rating from verified users, the H321N stands out as a trustworthy component for critical power control applications.
Key Features
- Compact design fits tightly into crowded control panels, freeing up valuable space.
- Robust 30 A rating handles demanding loads while maintaining precise current detection.
- Three‑phase 240 V compatibility ensures seamless integration with standard industrial power systems.
- Durable enclosure resists dust, moisture, and mechanical shock for extended service life.
- Responsive customer support and warranty coverage provide confidence after purchase.
FAQ
What type of wiring is required for the H321N?
The switch uses a screw‑type terminal block that accepts standard 12‑gauge to 14‑gauge conductors. Proper torque on the terminal screws ensures a secure connection and reliable performance.
Can the H321N be used in outdoor panels?
Yes, the enclosure is rated for indoor and outdoor use when installed in a weather‑protected panel. It meets NEMA standards for protection against dust and moisture.
Is the H321N compatible with variable‑frequency drives (VFDs)?
Absolutely. The 30 A rating and three‑phase capability make it suitable for monitoring and protecting VFDs in motor control applications.
What warranty does Square D provide for this switch?
Square D offers a one‑year limited warranty covering defects in materials and workmanship, along with access to technical support for installation and troubleshooting.
How does the H321N improve safety in a control panel?
By providing accurate current monitoring and rapid interruption of fault conditions, the switch helps prevent overheating, equipment damage, and potential fire hazards, enhancing overall system safety.
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