ABB 3BSE013250R1 Digital Output Module | 3A Relay

ABB 3BSE013250R1 Relay Output Module for S800 I/O Systems

The ABB DO821 delivers high-power relay control for industrial automation applications. This robust module provides eight isolated relay outputs handling up to 250V AC/DC. It features comprehensive protection and reliable operation in demanding environments.

Technical Specifications

• Brand: ABB
• Model: DO821
• Article Number: 3BSE013250R1
• Output Channels: 8 relay outputs
• Voltage Range: 5-250V AC/DC operating range
• Current Capacity: 3A per channel continuous
• Contact Configuration: Normally Closed (NC)
• Power Dissipation: 2.9W typical operation

Electrical Characteristics

• Output Type: Relay contacts with individual isolation
• Maximum Voltage: 250V AC/DC working voltage
• Dielectric Strength: 2000V AC test voltage
• Current Consumption: 60mA at +5V ModuleBus
• Relay Power: 140mA at +24V ModuleBus
• Field Wiring: 600 meters maximum cable length

Protection and Safety Features

• Individual channel isolation for maximum safety
• EMC protection components on all outputs
• Optical isolation barriers for noise immunity
• Relay power supply voltage monitoring
• Built-in surge protection for output channels
• IP20 protection against dust and contact

Environmental Specifications

• Operating Temperature: 0°C to +55°C range
• Storage Temperature: -40°C to +70°C limits
• Humidity Range: 5% to 95% non-condensing
• Pollution Degree: Level 2 classification
• Corrosion Protection: ISA-S71.04 G3 rating
• Protection Class: IP20 according to IEC 60529

Physical Specifications

• Dimensions: 119mm H × 45mm W × 102mm D
• Weight: 0.23 kg module weight
• Mounting: Standard DIN rail installation
• Connector Depth: 111mm including connections
• Protection: IP20 for industrial environments

Installation and Compatibility

• Compatible with S800 I/O mounting units
• Works with TU811, TU813, TU831 MTUs
• Keying code CA for proper installation
• Standard rail mounting for easy setup
• Maximum ambient temperature: 55°C

Frequently Asked Questions

• What does Normally Closed (NC) relay mean?
  NC contacts remain closed when de-energized and open when activated for safe operation.
• How does individual channel isolation help?
  Isolation prevents interference between channels and allows different voltage systems.
• What diagnostic features are available?
  The module provides LED status indicators and ModuleBus communication for monitoring.