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Product Description
May 27, 2026

Product Description

The 3DO750.6 is a high‑performance relay‑type digital output module from the B&R 2005 system, designed for universal industrial load control. It provides 8 normally open relay outputs rated at 230 VAC / 24 VDC, 3 A per channel, divided into 2 electrically isolated groups. Supporting both AC and DC loads, it delivers reliable, high‑isolation switching for general‑purpose industrial applications.

Description

Product Description

The 3DO750.6 is a high‑performance relay‑type digital output module from the B&R 2005 system, designed for universal industrial load control. It provides 8 normally open relay outputs rated at 230 VAC / 24 VDC, 3 A per channel, divided into 2 electrically isolated groups. Supporting both AC and DC loads, it delivers reliable, high‑isolation switching for general‑purpose industrial applications.

Basic Information

  • Model: 3DO750.6

  • Manufacturer: B&R Industrial Automation

  • Series: 2005 System I/O Module

  • Type: Digital Output Module (Relay, Normally Open)

  • Output Configuration: 8 relay outputs, 2 electrically isolated groups

  • Mounting: Standard DIN rail, compatible with B&R 2005 backplane

  • Housing: Industrial plastic, UL94V‑0 flame retardant

  • Protection Rating: IP20

  • Weight: Approx. 0.3 kg

  • Dimensions: 115 × 40 × 170 mm

  • Certifications: CE, UKCA, cULus

Function and Positioning

As a universal relay output component in the B&R 2005 automation system, the 3DO750.6 is positioned to offer flexible, isolated switching for mixed AC/DC loads. Its electromechanical relay design provides full electrical isolation between the control side and the load side, enhancing system safety and noise immunity. The two isolated groups allow independent power distribution and reduce cross‑interference. Per‑channel LED indicators enable quick status checks and on‑site diagnostics, making it ideal for driving contactors, valves, and auxiliary devices.

Core Performance Parameters

  • Output Voltage: 230 VAC (max), 24 VDC (max)

  • Output Current: 3 A per channel, 8 A per group, 16 A total

  • Output Type: Relay, normally open

  • Isolation: 500 VAC between groups and to system

  • Switching Frequency: Max. 10 Hz at rated load

  • Switching Capacity: Min. 100 mA / 5 VDC; Max. 750 VA (AC) / 72 W (DC)

  • Status Indicators: LED per channel, group power LEDs

  • Power Consumption: 3.0 W (2.3 W @24 VDC, 0.7 W @5 VDC)

  • Operating Temperature: 0 °C to +55 °C

  • Storage Temperature: -40 °C to +85 °C

  • Humidity: 5% to 95% (non‑condensing)

General Compatible Accessories

  • Terminal Block: TB170 (ordered separately)

  • Backplane: B&R 2005 system backplane (e.g., BP2005)

  • Power Supply: 24 VDC industrial power supply (compatible with B&R PS480.6)

  • Cables: Standard I/O cables; shielded cables for high‑noise areas

  • Replacement Parts: Relay cartridges, LED indicators, mounting clips

Applicable Equipment Fields

The 3DO750.6 is widely used in automation requiring mixed AC/DC load control and high isolation:

  • Manufacturing: Production lines, assembly machines, packaging equipment (AC/DC motors, contactors)

  • Process Industry: Chemical, pharmaceutical, water treatment (pumps, valves, actuators)

  • Building Automation: HVAC systems, lighting control, access control (fans, heaters, relays)

  • Energy: Power plant auxiliaries, renewable energy equipment (grid relays, heaters)

  • Logistics: Conveyors, sorting systems, automated storage (solenoids, drives)

  • General Machinery: Machine tools, material handling, safety interlocks (auxiliary relays, alarms)


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