Circuit Protection & Controls
Advanced protection for every circuit, every load, every time.
From molded case circuit breakers to precision motor control centers, our Circuit Protection & Controls division delivers the devices and systems that safeguard your electrical infrastructure. We combine decades of protection engineering with next-generation nano-sensing technology to prevent faults before they become failures.
NanoShield MCCB Molded Case Circuit Breakers
Precision overcurrent protection with electronic trip intelligence for demanding industrial applications.
The NanoShield MCCB family offers molded case circuit breakers from 15 A to 2,500 A with advanced electronic trip units featuring true-RMS sensing and configurable time-current curves. Designed for use in Heritage HT-LV switchgear, panelboards, and standalone enclosures, these breakers combine high interrupting capacity with compact footprints. Optional zone-selective interlocking and integrated ground fault protection ensure coordinated, selective fault clearing.
NanoShield MCB Miniature Circuit Breakers
Compact, DIN-rail-mount circuit protection for branch circuits and control systems.
The NanoShield MCB line provides reliable overcurrent protection for branch circuits, lighting, receptacles, and control panel applications. Available in B, C, and D trip curves from 0.5 A to 63 A, these miniature circuit breakers mount on standard 35 mm DIN rail and feature quick-connect or box-lug terminals for rapid installation. High short-circuit ratings and compact one-module-per-pole width make them ideal for space-constrained panels.
Heritage MCC Motor Control Centers
Configurable motor control centers that simplify wiring, commissioning, and ongoing maintenance.
The Heritage MCC is a modular, IEC and NEMA-rated motor control center designed for industrial plants, water treatment facilities, and large commercial HVAC systems. Each vertical section houses plug-in motor starter units that can be safely inserted and withdrawn under power, enabling true hot-swap maintenance. Integrated NanoDrive VFDs, soft starters, and smart overload relays can be factory-configured into any unit, providing a complete, tested motor management solution delivered ready to install.
NanoDrive VFD Variable Frequency Drives
High-performance variable frequency drives that optimize motor efficiency and process control.
NanoDrive VFDs provide precise speed and torque control for AC induction and permanent magnet motors from 0.5 HP to 1,500 HP. Featuring advanced sensorless vector control, integrated EMC filters, and built-in safety functions (STO, SS1), NanoDrive reduces energy consumption, mechanical wear, and downtime. An intuitive graphical keypad and integrated PLC functionality allow standalone process control without additional hardware.
IronGuard Series Contactors & Overload Relays
Rugged contactors and smart overload relays for reliable motor switching and protection.
The IronGuard Series provides a comprehensive range of AC and DC contactors from 9 A to 820 A, paired with electronic overload relays featuring phase-loss detection, ground fault sensing, and predictive thermal modeling. Designed for millions of operations, IronGuard contactors feature bifurcated silver-alloy contacts and an energy-efficient AC coil design that reduces holding power by 80%. Snap-on auxiliary contacts and interface relays complete the motor control solution.
Need Help with Circuit Protection & Controls?
Our specialist engineers can help you select, specify, and configure the right solution for your application.