Product Overview
The ABB DO630 is a 16-channel digital output module developed for the ABB Advant OCS control system. Its ABB product identification is 3BHT300007R1, and the official product documentation describes it as a 16-channel, 250 VAC isolated digital output module.
Designed for industrial process control, the DO630 provides relay-based output signals between the control system and field devices. It is particularly suitable for applications where multiple electrical loads must be switched and controlled from an ABB Advant automation platform.
Technical Parameters
- Manufacturer: ABB
- Type Designation: DO630
- Product ID: 3BHT300007R1
- Product Type: Digital Output Module
- Number of Channels: 16
- Output Type: Relay output
- Maximum Load Current: 2 A
- Minimum Load Current: 20 mA
- Switching Capacity: 500 VA AC / 40 W DC
- System Family: ABB Advant OCS / S600 I/O
- Typical Application: Industrial process control
- Product Weight: Approximately 1.32 kg
ABB documentation identifies the DO630 as a 16-channel relay output module. The module is designed for switching field loads and is associated with ABB Advant Controller 110/160 systems.
Main Features
16 Relay Output Channels
The module provides 16 digital output channels, allowing one module to control multiple external devices. This makes it practical for process-control systems with numerous discrete switching requirements.

Isolated Outputs
The DO630 uses isolated relay outputs. This configuration helps separate the control electronics from connected field circuits and provides flexibility when interfacing with different types of loads.
AC and DC Load Switching
According to ABB documentation, the relay contacts support loads up to 2 A, with a switching capacity of up to 500 VA for AC and 40 W for DC.
Advant OCS Compatibility
The DO630 belongs to the S600 I/O family and is documented for use with ABB Advant OCS systems, including Advant Controller 160 configurations.
Hardware Structure
The DO630 is a modular industrial I/O assembly containing relay output circuitry, interface electronics, terminal connections, and status indication components. Its modular design allows it to be incorporated into the larger Advant control system without requiring a separate output device for every field signal.
The relay-based architecture is especially useful when the control system needs to switch external equipment rather than generate a continuous analog signal.
The complete assembly weighs approximately 1.32 kg, while published dimensional information lists approximately 252 mm depth, 273 mm height, and 40 mm width.
Applications
The ABB DO630 can be used in a variety of industrial automation environments, including:
- Process control systems
- Power and utility applications
- Chemical processing
- Oil and gas facilities
- Manufacturing plants
- Industrial machinery
- Pump and valve control
- Motor and actuator switching
- ABB Advant OCS installations
In these applications, the module can send discrete control commands to devices such as contactors, relays, solenoid valves, alarms, and other compatible field equipment.
Installation and Maintenance
Before installation, verify the DO630 type designation, system configuration, terminal arrangement, and field-load requirements. The connected load must remain within the relay contact ratings.
Always isolate the control cabinet from power before replacing the module. Check terminal connections for looseness, oxidation, or signs of overheating. Because the DO630 contains relay contacts, excessive switching loads can shorten contact life.
During maintenance, technicians should also check channel status indicators and system diagnostics. If a single channel fails repeatedly, inspect both the connected field device and wiring before replacing the complete module.
For used or refurbished units, functional testing is recommended before returning the module to continuous production service.
Replacement Value
The ABB DO630 3BHT300007R1 remains a useful spare for facilities operating ABB Advant OCS equipment. Its 16-channel relay architecture provides a practical solution for discrete output control, while its established position within the S600 I/O family makes accurate part-number matching important.
We supply ABB DO630 digital output modules for industrial automation maintenance, system repair, and replacement applications. Availability, condition, and testing status can be confirmed according to your requirements.