P105BDA DC Contactor 50A

Sensata Gigavac P105BDA is a sealed P105 MiniTACTOR DC contactor, 50A, 1200VDC switching voltage, 12VDC coil, stud terminals

Overview

Overview

Sensata Gigavac P105BDA DC Contactor

The Sensata Gigavac P105BDA is a sealed hermetic DC contactor from the P105 MiniTACTOR Series, designed for compact high-voltage DC switching applications that require 50A current capacity and up to 1200VDC nominal switching voltage. It uses a 12VDC control coil and stud termination, making it suitable for pre-charge circuits, charge control, solar systems, battery packs, energy storage equipment, EV auxiliary circuits, and compact DC disconnect applications. In this model, 1200VDC refers to the main contact switching voltage, while 12VDC refers to the coil voltage used to operate the contactor.

Category	Relays - Contactors (Electromechanical)
Manufacturer	Sensata-Gigavac Clean Energy
Series	P105 MiniTACTOR
Packaging	Bulk
Part Status	Active
Mounting Type	Chassis Mount
Coil Voltage	12VDC
Contact Form	SPST-NO (DM) (1 Form X)
Contact Rating Current	50 A
Switching Voltage	1200VDC - Nom
Features	Sealed - Hermetically
Termination Style	Stud
Operating Temperature	-40°C ~ 65°C
Must Operate Voltage	7.5 VDC
Must Release Voltage	0.2 VDC
Operate Time	25 ms
Release Time	8 ms
Coil Current	170 mA
Coil Resistance	70 Ohms
Power Terminals	M4 Studs
Coil Terminals	M3 Studs

Product Description

The Sensata Gigavac P105BDA DC contactor is a compact MiniTACTOR designed for reliable make and break switching in high-voltage DC power systems. Unlike larger high-current contactors used as main battery disconnect devices, the P105BDA is optimized for lower-current circuits where small size, light weight, sealed protection, and high-voltage switching capability are important. With a 50A contact rating and 1200VDC nominal switching voltage, it is well suited for pre-charge circuits, charge paths, photovoltaic systems, compact battery packs, and control-side DC power switching.

The P105BDA uses an SPST-NO contact arrangement, also described as 1 Form X. The main contact remains open when the coil is not energized and closes when the 12VDC coil receives the correct control voltage. This allows a low-voltage control circuit to switch a higher-voltage DC load circuit. The 1200VDC value belongs to the main power switching path, while the 12VDC value belongs only to the coil circuit.

A key advantage of the Sensata Gigavac P105BDA is its hermetically sealed design. The sealed contact chamber helps protect the internal contact system from dust, moisture, oxidation, and harsh operating environments. This is important for solar equipment, battery systems, industrial control boxes, outdoor power electronics, and compact energy systems where contamination can reduce the service life of ordinary open-frame contactors.

The P105 MiniTACTOR platform is designed for safe DC power switching up to 1200VDC. This makes the P105BDA useful in circuits such as battery charging, pre-charge, renewable energy, and DC bus control. Its small and lightweight structure also helps engineers save space inside compact power modules and control cabinets.

Key Features

Genuine Sensata Gigavac P105 MiniTACTOR DC contactor
50A contact rating for compact DC power switching
1200VDC nominal switching voltage for high-voltage systems
12VDC coil for control circuit operation
SPST-NO main contact form for normally open switching
Hermetically sealed construction for clean switching environments
Stud termination with M4 power studs and M3 coil studs
25 ms operate time and 8 ms release time
Compact MiniTACTOR design for space-limited equipment
Suitable for pre-charge, charge, solar, and auxiliary DC circuits

Applications

The Sensata Gigavac P105BDA DC contactor is commonly used in compact high-voltage DC systems that need reliable connection and disconnection of moderate-current circuits. Typical applications include pre-charge circuits, solar photovoltaic disconnects, battery charging systems, compact energy storage systems, DC power distribution modules, EV auxiliary circuits, industrial DC control panels, and high-voltage test equipment.

In battery systems, the P105BDA can be used as a pre-charge contactor, charge contactor, auxiliary load contactor, or compact disconnect device depending on the system design. Its 50A current rating makes it more suitable for controlled auxiliary paths and charging circuits than for very high-current traction main contactor positions. For high-current main battery switching, a larger GV, GX, or HX Series contactor may be required.

Why Choose Sensata Gigavac P105BDA

The Sensata Gigavac P105BDA is a practical choice when the design requires 50A current capacity, high-voltage 1200VDC switching, 12VDC coil operation, hermetic sealing, and compact chassis mounting. Compared with larger contactors, the P105BDA saves space and weight. Compared with open-frame relays, the sealed contactor structure provides better protection for demanding DC switching environments.

For replacement and maintenance projects, P105BDA should be selected when the original system requires P105 Series MiniTACTOR performance with 50A contact rating, 1200VDC nominal switching voltage, 12VDC coil voltage, SPST-NO contact form, M3 coil studs, and M4 power studs. Before ordering, confirm the coil voltage, load current, switching voltage, mounting space, terminal requirements, and whether the circuit is pre-charge, charge, solar, or general DC switching.

FAQ

Q1: What is the full product name of P105BDA?
A1: The full product name is Sensata Gigavac P105BDA DC Contactor.

Q2: What is the main switching voltage?
A2: The main switching voltage is 1200VDC nominal.

Q3: What does 12VDC mean?
A3: 12VDC is the coil voltage used to operate the contactor, not the main load voltage.

Q4: What is the current rating?
A4: The contact rating current is 50A.

Q5: What is the contact form of P105BDA?
A5: The contact form is SPST-NO, also described as 1 Form X.

Q6: Where is P105BDA commonly used?
A6: It is commonly used in pre-charge circuits, charge systems, solar equipment, compact battery packs, and high-voltage DC control modules.

P105BDA DC Contactor 50A

Sensata Gigavac P105BDA is a sealed P105 MiniTACTOR DC contactor, 50A, 1200VDC switching voltage, 12VDC coil, stud terminals

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