1300 000 734

Power Supply & Battery Charger - 12V 20A


The SME240 series power supplies have been designed specifically for telecommunications applications demanding high reliability, low noise, fully automatic battery backup, battery protection and full protection of the output. Ideal in remote sites, they can be used completely unattended. With a host of protection features, the units are safe and reliable in any application.

Availability: In stock


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  • SME240-12-20
SME240-12-20 Features:

SME240-12-20 & SME240-24-10 power supplies provide a power output of 280 watts at 13.8V and 27.2V respectively. The normal input mains supply maybe 200-240VAC, 50-60Hz.

• Fan forced cooling with MTBF in excess of 75,000 hours
• Low noise output, ideal for telecommunications applications
• Lighter and more compact than comparable linear power supplies
• Battery over discharge protection with automatic reset
• Mains failure and battery reverse polarity alarm output
• Convenient plug in output connector
• 5 year warranty
• Local technical support
• C-Tick approved (EMI/EMC)
• Data connector, for voltage adjustment
• Optional external battery temperature sensor
Input Voltage Vac (Hz) 200-265 (50)
Output Voltage V adjustable 12.0 - 14.0
Output Ripple Voltage mVp-p <40
Output Current A 20
Over Voltage Protection V 16
Load Regulation 1 ±2% from set point taking into account all of line and load regulation and temperature coefficient when load powered by power supply
Load Regulation 2 +0-2% of battery terminal voltage when load powered by battery
Output Power W 280
Dimensions H=224 x W=59 x D=151 (excl. protusions)
Efficiency % 85%
Battery Charging Algoritum Float with 15min every 24hr boost
Battery Charge Current Max A 10
Battery Disconnect V 10.5
Battery Reconnect V >11.9 ±0.3
Battery Hysteresis V typically typically 1.5
Battery Fuse Electronic
Operating Environment 0-50°C Ambient Fan Forced thermally controlled
Alarm Closed contact 60V @ 0.2A
Weight (kg) 1.5
Compliance AS3260, AS3548, ACA, EMC, C-Tick Mark
Supplied with Instruction sheet, 2m 240VAC IEC cable, DC/Battery connector

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