0TB103.9 B & R Automation
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The B & R Automation 0TB103.9 is a terminal block from the 0TB Terminal Blocks series and features a screw clamp terminal type with screw flange vibration protection. It has a contact pitch of 5.08 mm, supports 13 Amps per contact at 150 Volts, and includes 3 pins in a single row. The block uses copper wire material and is suitable for 24 VDC supply voltage.
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Product Description:
The 0TB103.9 is produced by B & R Automation as part of the 0TB Terminal Blocks series. This pluggable connector component provides a screw-clamp wiring interface that lets control panels route sensor, actuator, or low-power supply lines onto printed circuit boards without hardwiring the field side directly to the board. In industrial automation, it serves as a removable field-wiring point, allowing rapid assembly and straightforward service access while still keeping conductors securely terminated during operation.
The block spaces its conductors on a center distance of 5.08 mm, so designers can determine PCB width and creepage paths from that fixed pitch during board layout. Each position can carry up to 13 A per contact, a current rating that supports typical 24 VDC solenoid or relay loads without overheating. The insulation system withstands up to 150 V between adjacent circuits, covering control-level voltages found in machine cabinets. Connections are made with a screw-clamp mechanism; when the clamp screw is tightened to the recommended 0.4 Nm, the copper conductor is compressed against the contact surface, creating a gas-tight junction that resists vibration and thermal cycling.
The electrical performance is backed by a contact resistance of 5 mΩ or less, which limits voltage drop and heat rise along the path. Signal or power entry is organized through 3 pins arranged in a single-row format, simplifying trace routing on the mating board. Control circuits that operate from a 24 VDC supply can be tied in directly, and the molded housing includes a screw flange that locks the connector to the panel to improve vibration resistance. Conductors are expected to be copper for optimal conductivity and clamp compatibility, and the compact profile supports dense packing of adjacent blocks on DIN-rail adapters or directly on backplanes where PCB space is limited.
Frequently Asked Questions about 0TB103.9:
Q: What is the contact pitch of the B & R Automation 0TB103.9 terminal block?
A: The 0TB103.9 terminal block has a contact pitch of 5.08 mm for secure wire placement.
Q: What is the nominal current rating for the 0TB103.9 terminal block?
A: This terminal block is rated for a nominal current of 13 A per contact.
Q: What kind of terminal connection does the 0TB103.9 use?
A: The 0TB103.9 terminal block is equipped with a screw clamp terminal type for connection.
Q: How many pins and rows are included in the 0TB103.9 terminal block?
A: It features a single row with 3 pins for electrical connections.
Q: What wire material is recommended for the 0TB103.9 terminal block?
A: Copper wire is the recommended material for use with this terminal block.
