FSR/20B- Transformer Rectifier
Transformer Rectifier for use w. Electromagnetic Door Holders/Closers/Magnets (w. Plug-in Relay Socket). Output - Full Wave Rectified and Unsmoothed (100% Ripple*).
Maximum Number of Control Units per FSR/20B:
2130B.TE - Maximum 15 Units
996 (all variants) - Maximum 15 Units
503 - Maximum 28 Units
533 - Maximum 28 Units
Case Dimensions - 228 x 152 x 76mm Deep
Power for ancillary devices must not be drawn from the fire alarm system except under alarm conditions. This range of power supply units is designed specifically to control one or more electromagnetic hold open devices. For the operation of the hold open unit the power requirements are 24V DC, 50mA nominal. Transformers and relays interfaced to the fire alarm system can also be supplied to link the electricity supply and the fire alarm system.
*This ripple is due to incomplete suppression of the alternating waveform within the power supply.