It carries a TM220 thermal-magnetic release — fixed thermal trip at 16 A (rated at 40 °C) and magnetic short-circuit pickup set at 220 A (the '220' in TM220). The 3-pole frame handles 800 V rated insulation voltage, and the front face is IP40 rated for panel-mount use. Breaking capacity is the headline here: 220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V, and it still holds 17 kA at 690 V.
At 60 °C and 65 °C it drops to 15 A, and at 70 °C it stays at 15 A. That's a shallow derating curve; most MCCBs in this frame size start rolling off earlier. If your enclosure ambient sits at 50 °C, you get the full 16 A without having to oversize the frame. Maximum power loss is 10.6 W at rated load — modest for a 3-pole 16 A frame.
The IP40 front protection means it's dust-protected on the face but not sealed against hose-down — standard for indoor panel mounting. It's a straight thermal-magnetic line protection breaker with a TM220 release. If you need aux contacts or a UVR, you add them via the accessory slots on the 3VA frame.