7TB736.91 B & R Automation
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The B & R Automation 7TB736.91 is part of the System 2003 Controllers series and features 36 pins with two connectors, each having 18 pins. The controller supports a rated current of 10 Amps per contact, uses cage clamp terminals, and operates at a rated voltage of 300 Volts. It has a contact pitch of 3.5 mm, measures 76 mm wide, 33 mm high, and 32 mm deep, and is designed for copper cable connections only.
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Product Description:
The 7TB736.91 is a terminal interface module manufactured by B & R Automation for the System 2003 Controllers series. Mounted on the controller backplane, it provides a pluggable wiring point that links field conductors to the I/O electronics without soldering. The connected terminal board can be removed or inserted as a single unit, shortening maintenance periods and keeping process cabling undisturbed during service in industrial automation cells.
Its signal channels are arranged on a contact pitch of 3.5 mm, keeping the array compact while preserving insulation distances. The module accepts copper conductors only, preventing galvanic mismatch and ensuring predictable conductivity. Each contact can carry up to 10 A per contact, allowing the block to support low-current sensors and moderate-power loads. The insulation system tolerates a maximum of 300 V between adjacent pins and the housing. Spring-loaded cage clamps secure the stripped leads, and their constant clamping force resists vibration and temperature cycling. Contact resistance remains at or below 4.2 mΩ, helping maintain signal integrity throughout the installation’s service life.
The compact layout fits dense rack assemblies, and two mating connectors provide a total of 36 pins. The pins are divided into 18 positions per plug for organized channel grouping. The module measures 76 mm wide and has a mounting depth of 32 mm. Its height is 33 mm, allowing it to align with neighboring System 2003 carriers without extra spacers. A built-in ejection lever disengages both plugs simultaneously, reducing stress on the board headers during removal. The rows inside each connector are electrically connected, allowing identical signals to be distributed in parallel without external jumpers. Keyed shrouds prevent reversed insertion during service and help maintain the intended connector orientation.
