Sensata Gigavac MX52CD

Sensata Gigavac MX52CD is a 200A DC Power Contactor from the MX52 series, designed for low-voltage control panels, compact DC distribution boxes, auxiliary battery circuits, and monitored 12-48VDC switching systems. This DC Power Contactor uses an SPST-NO contact form, a 24VDC coil, stud power terminals, chassis mounting, auxiliary contact functionality, and hermetically sealed construction. It is intended for low-voltage high-current applications where the system needs reliable switching and feedback without using a larger 400A or 500A contactor.

MX52CD is useful in equipment where current demand is moderate but contactor status feedback is important. The 200A rating supports battery branches, inverter inputs, charger paths, DC load circuits, and service disconnect functions. The 24VDC coil fits common industrial control architectures, while the sealed MX52 design helps protect the contact system from moisture, dust, vibration, and contamination in demanding electrical environments.

Product Positioning

MX52CD should be positioned as a monitored DC Power Contactor for 24V-controlled low-voltage power panels. It is different from MX12FCB because MX12FCB uses a 48VDC coil and long flying leads, while MX52CD is better suited to systems built around 24V control power and chassis-mounted stud connections. It is also different from MX14BA and MX15CE because those models target higher current classes.

The auxiliary contacts make MX52CD suitable for equipment that needs confirmation of contactor state. A controller can compare the coil command with auxiliary feedback before enabling an inverter, charger, pump, load branch, or battery output. This makes the DC Power Contactor useful in control panels where operating sequence, service lockout, and fault diagnostics matter.

Key Specifications

• Manufacturer series: Sensata Gigavac MX52
• Part number: MX52CD
• Product type: DC Power Contactor
• Contact form: SPST-NO, 1 Form A
• Rated current: 200A
• Switching voltage range: 12-48VDC according to distributor listings
• Coil voltage: 24VDC
• Coil current: approximately 280mA according to DigiKey data
• Coil power: approximately 6.8W according to DigiKey data
• Coil resistance: approximately 85.71 ohms according to DigiKey data
• Must operate voltage: approximately 16VDC according to DigiKey data
• Must release voltage: approximately 0.5VDC according to DigiKey data
• Termination style: stud terminals / M4 screws
• Mounting type: chassis mount
• Auxiliary contacts: included
• Contact material: silver
• Construction: hermetically sealed
• Operating temperature range: -55°C to +100°C
• Typical operate time: approximately 20ms
• Typical release time: approximately 12ms

Features and Benefits

The main benefit of MX52CD is its balanced 200A rating with auxiliary feedback in a compact low-voltage package. A DC Power Contactor in this range is suitable for medium-current circuits that exceed ordinary relay capacity but do not justify a larger heavy-duty contactor. This helps OEMs keep control panels compact while maintaining reliable DC switching performance.

The 24VDC coil matches common industrial and mobile control supplies. Many low-voltage power systems use 24VDC for PLCs, controllers, relays, safety modules, fans, and sensors. Selecting MX52CD can simplify the control power design because the contactor coil can operate from the same auxiliary power architecture.

The auxiliary contacts support supervised switching. Instead of relying only on the coil command, the system can verify whether the contactor has changed state. This is useful for battery disconnect panels, charger enable circuits, inverter inputs, and service interlock systems where unexpected contactor behavior should be detected.

Stud terminals provide secure power connections for cables or busbars. Even in 12-48VDC systems, 200A current paths require careful conductor sizing, terminal torque, thermal design, and fuse coordination. MX52CD gives designers a practical connection format for compact DC power assemblies.

Hermetically sealed construction helps protect the internal contact chamber from environmental contamination. A sealed DC Power Contactor is useful in workshop equipment, control cabinets, mobile machines, marine compartments, and battery enclosures where dust, humidity, and vibration can shorten the service life of open contactor designs.

Applications

MX52CD is especially suitable for low-voltage control panels and monitored DC distribution. In a 24V or 48V cabinet, this DC Power Contactor can connect a battery branch, switch an inverter input, isolate a charger path, or disconnect a protected output during service and fault conditions. The auxiliary contact can be tied into the control sequence to confirm operation before downstream loads are enabled.

The contactor can also be used in compact backup power systems, industrial automation panels, mobile service equipment, marine DC panels, battery test fixtures, and auxiliary power modules. Its 200A rating makes it appropriate for medium-current loads where a small relay is not enough and a larger 400A contactor would be oversized.

Selection Guide

Before selecting MX52CD, confirm that the circuit is within the 12-48VDC switching range and 200A current class. Review continuous current, peak current, inrush current, load type, duty cycle, ambient temperature, and expected service life. Battery loads, motor loads, inverter inputs, and charger circuits can create different electrical stresses, so the DC Power Contactor should be evaluated in the complete system.

The coil supply should be a stable 24VDC source. If the equipment uses 12VDC or 48VDC control power, another MX configuration may be more suitable. Designers should also verify auxiliary contact wiring, stud terminal clearance, cable bend radius, mounting orientation, vibration exposure, enclosure sealing, and service access.

FAQ

What is MX52CD used for?

MX52CD is used for low-voltage control panels, battery branches, inverter inputs, charger paths, compact DC distribution, and monitored 12-48VDC switching.

Is MX52CD a DC Power Contactor?

Yes. MX52CD is a Sensata Gigavac MX52 series DC Power Contactor with 200A current rating and 12-48VDC switching range.

What coil voltage does MX52CD use?

MX52CD uses a 24VDC coil. DigiKey lists approximately 280mA coil current and 6.8W coil power.

Does MX52CD include auxiliary contacts?

Yes. DigiKey lists MX52CD with auxiliary contacts and hermetically sealed construction.

How is MX52CD different from MX12FCB?

MX52CD uses a 24VDC coil and chassis-mounted stud termination, while MX12FCB uses a 48VDC coil and long flying leads. Both are 200A MX series DC Power Contactor options for low-voltage systems.

Conclusion

MX52CD is a 200A 12-48VDC DC Power Contactor for low-voltage control panels, monitored battery branches, compact DC distribution, and auxiliary power systems. With its Sensata Gigavac MX52 sealed construction, 24VDC coil, SPST-NO contact form, stud terminals, chassis mounting, auxiliary contacts, and silver contact material, it is a practical choice for OEM designs that need reliable 24V-controlled DC switching with feedback capability.