ABB 3BSE018333R1 (DSTD108P) 8-channel relay connection unit

ABB 3BSE018333R1 (DSTD108P) 8-Channel Relay Connection Unit

Product Description

ABB 3BSE018333R1, designated DSTD108P, is an 8-channel relay connection unit of ABB Advant OCS / Symphony / S800 I/O family with DIN rail mounting. It integrates 8 independent SPDT relay output channels. Acting as isolated interface for DCS digital outputs, it converts low-voltage controller logic signals to drive solenoid valves, shut-off valves, contactors and field actuators. Galvanic isolation between control side and field side protects DCS I/O cards from surge and short-circuit damage. Each channel has LED indicator for status and fault diagnosis. Widely deployed in legacy ABB DCS systems and used as spare replacement for Advant, Symphony and MOD300 control platforms.

Technical Specifications

• Product Name: DSTD108P 8-Channel Relay Connection Unit
• Brand: ABB
• Model: 3BSE018333R1 (DSTD108P)
• Channels: 8 SPDT relay outputs
• Relay Contact Rating: Max 5A per channel
• Load Voltage: 24~250VAC / 24~250VDC
• Control Power: 24VDC
• Isolation: Galvanic isolation between control and field circuits
• Status Indication: Individual LED per channel
• Mounting: 35mm standard DIN rail snap installation
• Protection Class: IP20 (cabinet installation)
• Operating Temperature: -20℃ ~ +60℃
• Storage Temperature: -40℃ ~ +85℃
• Relative Humidity: 5~95%, non-condensing
• Compatible Systems: Advant OCS, Symphony, MOD300, S800 I/O
• Product Status: Legacy DCS spare part for retrofit replacement
• Certifications: CE, RoHS, industrial EMC compliance

Application

1. Digital output isolation for ABB Advant / Symphony DCS, driving solenoid valves, shutdown valves and contactors
2. Interlock actuator control for petrochemical, power plant and paper process industries
3. Isolate low-voltage DCS control signals from heavy field loads to protect I/O modules
4. Retrofit and spare part renewal for legacy DCS with S800 I/O
5. Safety interlock and alarm output for field on/off equipment control

Same Series Models

3BSE018334R1, 3BSE018335R1, DSTD110, DSTD115, DSTD107