| 摘要 |
A removable calibration unit (10) includes a body (17), a front face (25) and a part in the form of a reversible ramp (22). The reversible ramp includes one end (24) close to the front face and one end (23) distant from the front face. Extraction of the removable unit is done by means of a pin (26) including an extraction stud (27). When the pin is subjected to a circular movement in one direction (A), the stud moves from the end close to the front face towards the end distant from it and causes extraction of the unit by application of a force (B) to it, moving it away from the circuit breaker. <IMAGE>
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