HX241CCB DC Contactor 400A 24V

Sensata Gigavac HX241CCB HX24 epoxy DC contactor, 400A, 1500VDC switching, 24VDC coil, 48 in leads, SPST-NO, NO auxiliary

Overview

Overview

Sensata Gigavac HX241CCB

The Sensata Gigavac HX241CCB is an HX24 Series epoxy hermetically sealed DC power contactor designed for compact high-voltage switching applications. This model is configured with a 400 A current rating, 1500VDC rated switching voltage, a 24VDC coil, 48 inch flying leads, an SPST-NO main contact, and an SPST-NO normally open auxiliary contact. The 1500VDC value refers to the main power/load circuit, while the 24VDC value refers to the coil/control circuit used to operate the contactor.

Category	Relays - Contactors, Electromechanical
Manufacturer	Sensata-Gigavac Clean Energy
Manufacturer Product Number	HX241CCB
Series	HX24
Product Type	Epoxy Hermetically Sealed High Voltage DC Contactor
Mounting Type	Upright Chassis Mount
Coil Voltage	24VDC
Contact Form	SPST-NO, 1 Form X Main Contact
Contact Rating Current	400 A
Switching Voltage	1500VDC Rated
Termination Style	Stud, Wire Leads
Coil Termination	48 inch / 122 cm Flying Leads
Power Terminals	M8x1.25 Stud Terminals
Auxiliary Contact	SPST-NO, Normally Open, Mechanically Linked
Auxiliary Contact Rating	2A at 24VDC Resistive Load
Operating Temperature	-55°C to +85°C
Must Operate Voltage	16 VDC
Must Release Voltage	2 VDC
Operate Time	20 ms Max
Release Time	12 ms Max
Coil Current	97 mA
Coil Power	2.3 W
Coil Resistance	247.42 Ohms
Mechanical Life	1,000,000 Cycles
Contact Resistance	0.4 mOhm Max; 0.3 mOhm Typical
Environmental Seal	Hermetically Sealed, Exceeds IP67 and IP69K
Typical Weight	Approx. 0.38 kg / 0.84 lb

Product Description

The Sensata Gigavac HX241CCB is a high-voltage DC contactor for systems that need compact size, high current capability, and reliable switching at 1500VDC class voltage. As part of the HX24 Series, it provides a 400 A current rating and an SPST normally open main contact, making it suitable for solar photovoltaic systems, energy storage systems, inverter inputs, battery packs, combiner boxes, DC charging equipment, wind power systems, and industrial HVDC power conversion equipment.

HX241CCB uses a normally open main contact. In the de-energized state, the main power circuit is open and the load is isolated. When the 24VDC coil is energized, the contactor closes and current flows through the power terminals. When coil power is removed, the contactor opens again. This makes the HX241CCB suitable for inverter DC input control, charge and discharge path switching, battery isolation, solar string switching, DC bus connection, and high-voltage load disconnect functions.

The complete model number should be used in product listings and backend records. “HX24” identifies the 400 A, 1500VDC epoxy contactor family. The “1” indicates upright mounting. The first suffix letter “C” indicates the 24VDC coil version. The second “C” indicates 48 inch flying leads. The final “B” indicates an SPST normally open auxiliary contact. The main contact and auxiliary contact are both normally open, but the main contact carries the power load while the auxiliary contact is used only for feedback or control signaling.

Key Features

400 A current rating for demanding high-voltage DC systems.
1500VDC rated switching voltage for solar, ESS, inverter, and battery applications.
24VDC coil for common industrial and battery control architectures.
SPST-NO main contact for controlled power connection and isolation.
Normally open auxiliary contact mechanically linked to the main contact system.
48 inch flying leads for flexible wiring in cabinets and vehicle platforms.
Epoxy hermetic sealed construction for harsh-environment reliability.
Dual DC coil design with low continuous coil power.
Built-in coil suppression for simplified control circuit design.
Sealing performance exceeds IP67 and IP69K requirements.

Applications

The Sensata Gigavac HX241CCB is commonly used in high-voltage renewable energy and battery power systems. Typical applications include photovoltaic inverters, solar combiner boxes, energy storage battery racks, high-voltage battery packs, DC power conversion cabinets, charger systems, wind power systems, battery test equipment, industrial DC buses, and high-voltage safety disconnect circuits.

The normally open auxiliary contact gives the control system a feedback signal that can be used for diagnostics, sequencing, interlock logic, or status confirmation. Because the auxiliary contact is mechanically linked to the main power contacts, it provides useful contactor state information. It is a low-current signal contact and must not be used as a power switching path.

Design Notes

The 1500VDC and 24VDC values describe separate electrical paths. The 1500VDC value applies to the main contact/load circuit and defines the high-voltage DC circuit the contactor is designed to switch. The 24VDC value applies to the coil circuit that actuates the contactor. A system can use a 24V controller output to operate the coil while the main terminals switch a much higher DC bus, provided the current, voltage, temperature, and protection requirements remain within the product ratings.

HX241CCB uses a dual-coil design. Both coils are used during pickup, and then the device transitions to lower continuous hold power. The coil should be driven according to the manufacturer’s requirements, and pickup voltage should not be slowly ramped during testing. Built-in coil suppression is included, so external diodes across the coil should not be added unless the application has been reviewed for release-time and switching-performance effects.

For capacitive loads such as inverter inputs, DC link capacitors, battery packs, and photovoltaic power electronics, a pre-charge circuit is normally required before closing the main contactor. Pre-charge limits inrush current and helps protect the contactor, fuses, cables, busbars, and conne

HX241CCB DC Contactor 400A 24V

Sensata Gigavac HX241CCB HX24 epoxy DC contactor, 400A, 1500VDC switching, 24VDC coil, 48 in leads, SPST-NO, NO auxiliary

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