It's a 3-pole unit rated 25 A at 40 °C with a TM240 thermal-magnetic overcurrent release, and it carries an undervoltage release (UVR) built in — that's the -5EF36 suffix telling you the UVR is factory-fitted, not a field-add-on. Breaking capacity is the headline number here: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V.
Current derating — the real-world number
At 55 °C it derates to 24 A, at 60 °C still 24 A, at 65 °C drops to 23 A, and at 70 °C stays at 23 A. That's a shallow derating curve — you lose only 2 A over a 30 °C rise — so if your panel ambient runs warm, this breaker still carries most of its nameplate.
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — that's roughly 5.12 by 3 by 2.76 inches. It's a straight line-protection breaker with undervoltage release — keep it simple for the BOM.