Eaton BSFi

The Eaton BSF1253-TN-E Surge Filter is configured in a 3 stage, 7 protection mode topology. This model is designed to provide primary AND secondary protection to key circuits with multiple loads in accordance with IEC61643-11, Class I & II, medium to high-risk primary circuits and should be considered for use with other primary SPD’s where applicable as defined in IEC61643-12, ANSI/IEEE C62.41 or AS/NZS 1768 protection zones guidelines. This model provides a high degree of protection to dedicated single load devices such as UPS, servers etc. which are directly connected to the filter.

Operating Description

This model is connected in series with the power system as close as possible to the device to be protected. Excess voltage transients are diverted to mains Neutral and Earth depending on the installation configuration thus limiting damage to the downstream load. Once transients have ceased the unit returns to normal operation.

This unit provides 3 stages of protection in 7 modes. Stage 1 provides high kA rated protection across L1, L2, L3-N and NE.

Stage 2 comprises a low pass LC filter network in the Line conductor to reduce or eliminate surge currents passing to the load side as well as offering noise rejection.

Stage 3 provides additional load side protection across L1, L2, L3-N to manage any transients that may occur on the load side circuits.

Status of the unit is indicated by 4 led indicators on the front face. When all indicators are blue the unit operates OK. When any indicator is off then the unit has a fault condition. It is recommended to contact the manufacturer in this event.