No. Most professional safes are not supplied with an emergency key as standard. Emergency keys are mainly found on low-cost, non-certified safes, such as hardware store models, where the batteries are located inside the safe.
On professional safes, batteries are usually located on the outside of the lock, or an external power supply is available. With EN 1300-certified electronic locks, the programmed code is always retained, even in the event of a power failure, making an emergency key generally unnecessary.
There are, however, professional electronic locks with an emergency key, such as the Kaba-Mauer Code Combi B90 (EN 1300 Class B), suitable for use on safes up to EN 1143-1 Grade 5.