B&R X20DO4F49
4 digital outputs Relay module for 250 VDC / 240 VAC 2 normally open contacts and 2 changeover contacts Single-channel isolated outputs This module is equipped with 4 relay outputs (2 normally open and 2 changeover contacts each) for 250 VDC / 240 VAC. The outputs are single-channel isolated.
Lifecycle & replacement
Lifecycle status not indexed
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Technical specifications
Short description
| I/O module | 4 digital outputs 250 VDC / 240 VAC, outputs single-channel isolated |
General information
| Diagnostics / Module run/error | Yes, using LED status indicator and software |
| Diagnostics / Outputs | Yes, using LED status indicator |
| Power consumption / Bus | 1.1 W |
| Power consumption / Internal I/O | - |
| Certifications / CE | Yes |
| Certifications / UKCA | Yes |
| Certifications / CRA (Cyber Resilience Act) | In preparation |
| Certifications / Functional safety | IEC 61508 in preparation EN 62061 in preparation EN ISO 13849-1 in preparation IEC 61511 in preparation |
| Certifications / UL | cULus E115267 Industrial control equipment |
| Certifications / DNV | Temperature: B (0 to 55°C) Humidity: B (up to 100%) Vibration: B (4 g) EMC: B (bridge and open deck) |
| Certifications / CCS | Yes |
| Certifications / LR | ENV1 |
| Certifications / KR | Yes |
| Certifications / ABS | Yes |
| Certifications / BV | EC33B Temperature: 5 - 55°C Vibration: 4 g EMC: Bridge and open deck |
| B&R ID code | 0xF76A |
| Status indicators | I/O function per channel, operating state, module status |
| Additional power dissipation caused by actuators (resistive) [W] | +0.32 |
Digital outputs
| Switching delay / 0 → 1 | Normally open contact ≤15 ms / Changeover contact ≤19 ms |
| Switching delay / 1 → 0 | Normally open contact ≤11 ms / Changeover contact ≤15 ms |
| Insulation voltages / Channel - Bus | Tested at 3500 VAC |
| Insulation voltages / Channel - Channel | Tested at 1700 VAC |
| Insulation voltages / Channel - Ground | Tested at 3500 VAC |
| Service life / Electrical | 10⁵ at 2 A (normally open contact and changeover contact) |
| Service life / Mechanical | 30 x10⁶ cycles (normally open contact and changeover contact) |
| Switching capacity / Minimum | 0.12 W DC / 2.4 W AC |
| Switching capacity / Maximum | DC: See section "DC switching capacity". AC: 480 W |
| Protective circuit / External / AC | RC combination or VDR |
| Protective circuit / External / DC | Inverse diode, RC combination or VDR |
| Protective circuit / Internal | None |
| Variant | Relays: 2 normally open contacts and 2 changeover contacts Channels are single-channel isolated. |
| Nominal voltage | 250 VDC / 240 VAC |
| Max. voltage | 250 VAC |
| Switching voltage | Max. 250 VDC / 250 VAC |
| Rated frequency | DC / 45 to 63 Hz |
| Nominal output current | DC: See section "DC switching capacity". AC: 2 A at 240 VAC |
| Total nominal current | DC: See section "DC switching capacity". AC: 8 A at 240 VAC |
| Actuator power supply | External |
| Inrush current | Max. 8 A (per channel) |
| Contact resistance | Max. 100 mΩ |
Electrical properties
| Electrical isolation | Channel isolated from channel, bus and I/O power supply |
Operating conditions
| Mounting orientation / Horizontal | Yes |
| Mounting orientation / Vertical | Yes |
| Installation elevation above sea level / 0 to 2000 m | No limitation |
| Installation elevation above sea level / >2000 m | Reduction of ambient temperature by 0.5°C per 100 m |
| Degree of protection per EN 60529 | IP20 |
Ambient conditions
| Temperature / Operation / Horizontal mounting orientation | -25 to 60°C |
| Temperature / Operation / Vertical mounting orientation | -25 to 50°C |
| Temperature / Derating | - |
| Temperature / Storage | -40 to 85°C |
| Temperature / Transport | -40 to 85°C |
| Relative humidity / Operation | 5 to 95%, non-condensing |
| Relative humidity / Storage | 5 to 95%, non-condensing |
| Relative humidity / Transport | 5 to 95%, non-condensing |
Mechanical properties
| Note | Order 1x terminal block X20TB32 separately. Order 1x bus module X20BM32 separately. |
| Pitch | 25⁺⁰.² mm |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
Datasheets
Manuals
ECAD / EPLAN
Certificates
- 64331_A1 BV Certificate of Compliance X20
- 64331_A1 BV Certificate of Compliance X20(de)
- CCS Type Approval Certificate - X20
- EU Data Act - X20 IO - Connected Product Information Notice
- EU Declaration ATEX X20
- EU Declaration of conformity PLC X20
- KR Type Approval Certificate MIL39390-AC003 (X20 System)
- Lloyds Register (X20 only)
- TAA00000BJ DNV Type Approval Certificate X20
- UK Declaration PLC X20
Get a quote for a replacement
Industrial Automation Co. stocks, sources, and repairs B&R parts — new, refurbished, or exchange units with warranty.
Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.