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WARNING

Insu󹪟cient isolation of intrinsically safe and non-intrinsically safe circuits

Risk of explosion in hazardous areas

• When connecting intrinsically safe and non-intrinsically safe circuits, ensure that the

galvanic isolation is performed properly in compliance with local regulations (e.g. IEC

60079-14).

• Observe the device approvals applicable for your country.

Notes for use in hazardous locations according to ATEX, IECEx, UKEX and CCC Ex

If you use the device under ATEX, IECEx, UKEX or CCC Ex conditions you must also keep to the

following safety instructions in addition to the general safety instructions for protection against

explosion:

WARNING

Transient overvoltages

Take measures to prevent transient overvoltages of more than 40% of the rated voltage (or

more than 119 V). This is the case if you only operate devices with SELV (safety extra-low

voltage).

WARNING

Suitable cables at high ambient temperatures in hazardous area

At an ambient temperature of ≥ 60 °C, use heat-resistant cables designed for an ambient

temperature at least 20 °C higher. The cable entries used on the enclosure must comply with

the IP degree of protection required by EN IEC / IEC 60079-0, GB 3836.1.

Safety instructions for use in hazardous locations according to UL/FM HazLoc

If you use the device under UL or FM HazLoc conditions, you must also adhere to the following

safety instructions in addition to the general safety instructions for protection against explosion:

WARNING

EXPLOSION HAZARD

You may only connect or disconnect cables carrying electricity when the power supply is

switched o󹪜 or when the device is in an area without in󹪞ammable gas concentrations.

Safety notices when using the device according to ATEX/IECEx and FM

If you use the device under ATEX/IECEx or FM conditions, you must also observe the following

safety notices in addition to the general safety notices for protection against explosion:

Connecting up

6.1 Safety when connecting up

SCALANCE XB-000

Operating Instructions, 01/2022, A2B00077300-11 47

Siemens SCALANCE XB-000 User Manual

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