The Schneider Electric MTN684032 is a compact SpaceLogic KNX bus power supply delivering 320 mA at 30 V DC SELV for small to medium KNX segments. The integrated choke couples the DC supply to the twisted pair while preserving data telegram integrity.

Built-in short-circuit and overload protection with front LED diagnostics simplify commissioning and fault finding. The light-grey housing mounts on standard 35 mm DIN rail (4 modules). For auxiliary 30 V output and parallel expansion, compare MTN6513-1203; for 640 mA bus-only see MTN684064.

Key Features — Compact 320 mA Bus Supply

Power and Protection

• Output: 320 mA at 30 V DC with integrated choke.
• Short-circuit proof: Protects supply and connected bus devices.
• Overload protection: Limits output when total device current is exceeded.
• LED diagnostics: Visual operating-state indication on the front.

At a Glance

Specification	Detail
Order code	MTN684032
Output current	320 mA (max.)
Bus voltage	30 V DC SELV
Device width	4 modules (≈ 72 mm)
Colour	Light grey

Full electrical and mechanical data are under Technical Specifications. Official Schneider documentation is under Downloads.

Applications and KNX Integration

• Small lines: Apartment, hotel floor, or dedicated sub-line behind MTN6500-0101.
• Sensor-heavy zones: Power MTN630819 and MTN6355-0019 with moderate actuator count.
• Commissioning: Program via MTN6502-0101 USB or MTN6502-0105 IP interface.
• Upgrade path: Move to MTN684064 (640 mA) or MTN6513-1202 when load grows.

Choosing MTN684032 vs MTN6513-1203

Use MTN684032 for a compact, bus-only 320 mA supply at lower cabinet cost. Choose MTN6513-1203 when you need auxiliary 30 V, signaling contact, and parallel doubling to 640 mA.