The ABB DSTD108P, also cataloged as part number 3BSE018333R1, operates as a 32-channel connection unit module for signal termination and relay interface duties within ABB Advant OCS and System 800xA distributed control environments.

Model Configuration

Ordering Code and Variant Identification

• Part Number / Catalog Number: 3BSE018333R1
• Module Identifier: DSTD108P
• Channel Configuration: 32 channels supporting 24/48 VDC or 24–250 VAC/DC relay switching applications.

Hardware Specifications

Backplane Communication and I/O Configuration

Designed for integration into ABB Advant OCS and System 800xA control architectures, the DSTD108P connection unit module acts as an interface layer between field instrumentation and the system I/O subsystems. It manages 32 discrete I/O channels equipped with internal relay configurations capable of handling mixed voltage levels ranging from low-voltage 24/48 VDC circuits up to 250 VAC/DC industrial loads. The physical layout provides structured terminal access to minimize wiring errors, isolate control loops, and ensure deterministic signal transfer across process automation controllers.

Ordering Information and Package Contents

• 1 x ABB DSTD108P 3BSE018333R1 Connection Unit Module

Installation and Wiring Considerations

• Verify that all associated cabinet power supplies and field circuit feeds are fully de-energized and locked out prior to physical installation or cable termination.
• Mount the unit securely on standard industrial mounting rails or specified cabinet chassis locations in accordance with ABB environmental clearance guidelines.
• Ensure proper wire stripping lengths and terminal screw torque limits are applied to prevent loose connections or conductor damage under vibration.
• Separate low-level analog or digital signal wiring from high-voltage power conduits and motor drive cables to minimize electromagnetic interference (EMI).
• Check polarity and voltage ratings against system drawings before applying power to the 24/48 VDC or 24–250 VAC/DC relay circuits.

Frequently Asked Questions

• Q: What is the exact part number for this ABB connection unit module? A: The complete part number is DSTD108P, also identified by catalog number 3BSE018333R1.
• Q: Which control systems are compatible with the DSTD108P module? A: This connection unit module is designed for use within ABB Advant OCS and System 800xA automation platforms.
• Q: How many channels does this connection unit support? A: The module provides 32 distinct I/O channels.
• Q: What are the supported voltage ratings for the relay channels? A: The onboard relays accommodate 24/48 VDC and 24–250 VAC/DC circuit configurations.
• Q: What is the physical weight of the module? A: The unit has a verified product weight of 0.35 kg.
• Q: What are the estimated shipping dimensions for this part? A: The estimated shipping dimensions are 16 cm x 12.4 cm x 6 cm.
• Q: What is the country of origin for the 3BSE018333R1? A: Manufacturing records indicate the origin is Sweden.
• Q: Is pre-configured software required to operate this connection unit? A: As a hardware connection and relay termination unit, configuration is managed primarily through the connected ABB controller and I/O rack setup rather than onboard firmware execution.