RAILWAYS PB169/253/254 1 0 0 - 1 3 8 W AT T S R A I LW AY D C / D C C O N V E R T E R S Features • Input reverse polarity protected. • Input transient protected. • Input surge protection. • Meets IEC571, BRB12, BRB13 and BRB18 for input transients and surges Specifications OPERATING INPUT Voltage PB169: 20-30Vdc. PB253: 18-50Vdc. PB254: 74-138Vdc. Input ripple voltage 30% of Vin Input reverse polarity protection 800V indefinitely. Efficiency at full load 73%–80% Isolation (with VR1 & VR2 removed) Input – Output: 1000VAC Input – Ground: 1000VAC Output – Ground: 500VAC ENVIRONMENTAL Operating Temperature OUTPUT Output voltage Output current Output power Line & load regulation 396 PB169: 24Vdc. PB253: 24Vdc. PB254: 13.8Vdc. -20°C to 45°C (PB169, PB253). -10°C to 60°C (PB254). STANDARDS AND APPROVALS Input transient and surge protection Designed to meet BRB 12, BRB 13, BRB 18 and IEC571-1. PB169: 4.2A. PB253: 4.2A. PB254: 10A. C-Tick AS/NZS2064:1997 Group 1 Class A PB169: 100W. PB253: 100W. PB254: 138W. Connections 6-way terminal block connector Dimensions PB169: 60x111x60mm. PB253: 60x111x60mm. PB254: 60x158x205mm. Mounting Four M4 slots ±0.36Vdc (PB169/253). ±0.10Vdc (PB254). MECHANICAL