Two protected poles, fixed-mount, front-connected. It is designed for distribution duty per EN/IEC 60947-2 and carries a suitability-for-isolation marking per that standard. The TM-D trip provides L (thermal overload) and I (magnetic short-circuit) protection. The magnetic pickup is fixed — no adjustment dial on this unit. At 20 A continuous, the power dissipation per pole is 4.01 W, so panel thermal rise is predictable for a 2-pole device.
The full Icu table per IEC 60947-2 is 36 kA at 240 V AC, 18 kA at 415 V AC (1P), 15 kA at 440 V AC, 10 kA at 500/525 V AC, and 5 kA at 660/690 V AC. On DC: 36 kA at 250 V DC (1 pole), 36 kA at 500 V DC (2 poles in series). These are the maximum interrupting ratings — your system's prospective fault current must not exceed the value at your operating voltage.
Dimensions: 161 mm high, 70 mm wide, 86 mm deep. Mounts flat on a backplate in any orientation — horizontal or vertical. Connection pitch is 35 mm. IP40 enclosure protection; IK07 impact resistance. Operating altitude to 2000 m without derating, 2000–5000 m with derating. Ambient relative humidity range 0–95 %. Electrical durability: 20,000 cycles at 277 V at In/2, 10,000 cycles at 277 V at In. Mechanical durability: 20,000 cycles.