Sensata Gigavac HX22CBB

Sensata Gigavac HX22CBB is a 300A 1500VDC High Voltage DC Contactor for solar DC disconnect panels, photovoltaic combiner cabinets, outdoor battery interface boxes, and serviceable renewable energy power assemblies. The model belongs to the HX22 family and is built for applications where high DC voltage, moderate-high current capacity, sealed construction, and contact status feedback must fit into a practical cabinet layout. This High Voltage DC Contactor uses a 24VDC coil, stud power terminals, flying lead control wiring, chassis mounting, and normally open auxiliary feedback.

HX22CBB should be used where the contactor is part of a controlled isolation point rather than only a general inverter input switch. In solar and storage field equipment, technicians often need a contactor that can separate a PV or battery branch during service, fault response, or remote shutdown. The 1500VDC rating gives the design voltage headroom for modern high-voltage DC strings, while the 300A rating supports substantial branch current without requiring a larger 350A or 400A device.

Product Positioning

HX22CBB is best positioned as a High Voltage DC Contactor for outdoor renewable energy disconnect functions. Its strongest use case is not a generic inverter cabinet page, but a monitored switching point inside PV combiner systems, solar-plus-storage junction cabinets, DC disconnect skids, and renewable energy service panels. The normally open auxiliary contact can report contactor position to the cabinet controller, gateway, or protection system.

This product is especially useful when a system designer wants a 24VDC coil contactor that can be installed close to the high-voltage bus while routing the low-voltage control harness separately. The flying leads allow flexible wiring inside cabinets where power conductors, surge protection, fuses, sensors, and communication modules may all compete for space.

Key Specifications

• Manufacturer series: Sensata Gigavac HX22
• Part number: HX22CBB
• Product type: High Voltage DC Contactor
• Main contact form: SPST-NO-DM / 1 Form X
• Rated current: 300A
• Nominal switching voltage: 1500VDC
• Coil voltage: 24VDC
• Power termination: stud terminals
• Control termination: flying leads / wire leads
• Mounting style: chassis mount / upright mount
• Auxiliary contact: normally open auxiliary feedback
• Construction: hermetically sealed
• Typical operating temperature range: -55°C to +85°C according to HX series data

Features and Benefits

The 1500VDC capability is the main reason to select HX22CBB for modern renewable energy equipment. Many PV and storage systems operate at voltage levels where lower-rated contactors are not appropriate. This High Voltage DC Contactor gives the cabinet designer a component suited to elevated DC bus voltage while keeping the current class at 300A.

The normally open auxiliary feedback helps improve service logic. A controller can check whether the contactor has followed the coil command before allowing a converter, combiner branch, or battery interface to continue operation. This can support remote diagnostics, lockout procedures, and controlled restart after a fault.

The 24VDC coil matches common cabinet control supplies. Solar disconnect panels and outdoor battery boxes often use 24VDC for monitoring modules, fans, protection relays, and low-voltage controls. Using a 24V coil High Voltage DC Contactor avoids adding another control voltage just for the switching device.

Stud terminals are practical for high-current DC conductors, while flying leads keep control wiring flexible. This separation is useful in outdoor renewable energy cabinets where the high-voltage section and control section may be physically separated for serviceability and safety.

The hermetically sealed design helps protect the internal contact chamber from humidity, dust, and environmental contamination. That matters in outdoor solar equipment, containerized storage yards, industrial rooftops, and remote power sites where cabinets may face temperature cycling and long maintenance intervals.

Applications

HX22CBB is suitable for photovoltaic combiner cabinets, solar DC disconnect panels, battery interface boxes, renewable energy service cabinets, and high-voltage DC branch isolation. In a solar-plus-storage installation, this High Voltage DC Contactor can disconnect a protected DC branch, isolate a battery interface, interrupt a converter path, or provide a monitored switching point for service procedures.

It can also be used in charger support equipment, DC distribution skids, outdoor power conversion systems, and industrial renewable energy cabinets. The model is most useful where 300A capacity is enough, 1500VDC rating is required, and auxiliary feedback is needed for controller confirmation.

Selection Guide

Before selecting HX22CBB, confirm the maximum DC voltage, continuous current, short-term current, inrush profile, and switching duty. Solar and storage circuits may include capacitance, long cable runs, fuses, surge protection, and precharge behavior that affect contactor stress. The High Voltage DC Contactor should be reviewed together with the complete protection and control design.

Use HX22CBB when the system has a 24VDC control supply and needs normally open auxiliary feedback. If the application does not need feedback, a no-auxiliary HX22 version may reduce wiring. If the current path is closer to 350A or 400A, HX21 or HX24 alternatives should be checked.

FAQ

What is HX22CBB used for?

HX22CBB is used for solar DC disconnect panels, PV combiner cabinets, battery interface boxes, and 1500VDC renewable energy switching.

Is HX22CBB a High Voltage DC Contactor?

Yes. HX22CBB is an HX22 series High Voltage DC Contactor rated for 300A and 1500VDC-class switching.

What coil voltage does HX22CBB use?

HX22CBB uses a 24VDC coil, which matches many renewable energy and industrial cabinet control systems.

Does HX22CBB include auxiliary feedback?

Yes. Public distributor data lists auxiliary contacts, and RS references a normally open auxiliary configuration.

How should HX22CBB be selected?

Select HX22CBB when the design needs 300A 1500VDC switching, 24VDC coil control, stud power terminals, flying leads, and normally open contact status feedback.

Conclusion

HX22CBB is a 300A 1500VDC High Voltage DC Contactor for solar DC disconnect panels, PV combiner cabinets, renewable energy service boxes, and outdoor battery interface systems. With its Sensata Gigavac HX22 sealed construction, 24VDC coil, stud terminals, flying leads, chassis mounting, and normally open auxiliary feedback, it provides a compact monitored switching option for high-voltage renewable energy power assemblies.