Product details
Extended MTU Overview
The ABB TU831V1 Extended Termination Unit (3BSE013235R1) connects field wiring to S800 I/O modules. It is built for larger wires and provides more connection space. This 8-channel passive unit handles up to 250 V and 3 A per channel.
- Handles thick wires: Accepts solid wire up to 6 mm² (10 AWG).
- 8 isolated channels: Each channel uses two terminals (16 total connections).
- Mechanical keying: Prevents wrong I/O module insertion.
- 12-month warranty against defects.
Model & Key Details
- TU831V1 – Extended Module Termination Unit
- Article number: 3BSE013235R1.
- Type: Extended (larger wire terminals).
- Channels: 8 (up to 250 V, 3 A per channel).
- Process connections: 16 (two terminals per channel).
- Connection: Terminal block.
- Wire sizes: Solid 0.2-6 mm²; stranded 0.2-4 mm² (24-10 AWG).
- Torque: 0.5 – 0.6 Nm; strip length 7 mm.
- Dielectric test: 2000 V a.c.
- Mounting: Both directions, max 55°C (131°F).
- Weight: 0.22 kg (0.48 lb).
- Dimensions (W x H x D): 126 x 110 x 64 mm (including connectors).
Compatibility & Use
- Works with I/O modules: DI820, DI821, DO820, DO821 (single I/O only).
- Distributes ModuleBus and shifts address signals to next MTU.
- Mechanical keying prevents wrong module insertion.
- DIN rail mounting with integrated latch for grounding.
Environmental & Certifications
- Operating temp: 0°C to +55°C (32°F to 131°F); approvals valid +5°C to +55°C.
- Storage temp: -40°C to +70°C (-40°F to +158°F).
- Humidity: 5% to 95% non-condensing.
- Protection: IP20 (IEC 60529).
- Corrosion: ISA-S71.04 G3 level.
- Certifications:
- CE, UL 61010-1, EN 61010-2-201.
- Marine: ABS, BV, DNV-GL, LR.
- EMC: EN 61000-6-2, EN 61000-6-4.
- RoHS (EN 50581:2012), WEEE compliant.
- Pollution degree: 2 (IEC 60664-1).
- Equipment class: Class I (earth protected).
Package & Logistics
- Includes: One ABB TU831V1 extended termination unit, factory sealed.
- Warranty: 12 months from shipment.
- Shipping partners: FedEx, UPS, DHL – tracked and insured.
- Origin: New & original in factory packing.
Frequently Asked Questions (FAQ)
- Can I connect 10 AWG wire to this MTU?Yes. The TU831V1 accepts solid wire up to 6 mm², which is equivalent to 10 AWG. Use stranded wire up to 4 mm².
- What tools do I need for installation?A standard screwdriver with 0.6 Nm torque setting. Use wire strippers set to 7 mm. No special tools are required.
- Is this MTU compatible with 16-channel I/O modules?No. It is designed for 8-channel modules only (DI820, DI821, DO820, DO821). For 16 channels, consider TU841V1.
- Why are there two terminals per channel?Each isolated channel needs a signal and a return connection. This design keeps channels electrically separate for better noise immunity.
- Can I mount this vertically?Yes, mounting is allowed in both directions. The maximum ambient temperature remains 55°C regardless of orientation.
Selection Guide
- Choose TU831V1 when your field wiring is heavy gauge (up to 10 AWG).
- Verify I/O module type: only DI820, DI821, DO820, DO821 (single).
- For marine installations, this unit holds ABS, BV, DNV-GL, LR approvals.
- Set the two mechanical keys to match your I/O module before snapping it on.
- Need isolated channels with higher density? Look at the TU841V1 (16 channels).
For inquiries or rush orders: Email sales@powergearx.com or WhatsApp +86 18030005825.
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