24-12-3 DC ConverterConvert 17-32 VDC input to 12 VDC negative ground output for powering communication and navigation equipment on negative ground systems. (See Isolated Series for positive ground applications.)Features: Excellent Regulation: Output voltage maintained within 1% under all line and load conditions within the rating The heat generated by semi-conductors is extracted and dissipated by large heat sink fins that maximize air contact for cool operation and the long life of components Polyurethane conformal coating on PC boards and corrosion-resistant anodized aluminum cases with heavy-duty shock mounts assure survival in hostile environments Numerous Converter and Load Protection Circuits: Current limiting Automatic thermal shutdown Short circuit proof Reverse polarity Overvoltage protection Carries CE mark Specifications: Input Voltage: 17-32 Output Voltage: 13.6 Output Amps (Intermittent): 3 Output Amps (Continuous): 3 Case Size (H x W x D): 3.5 x 3.5 x 1.75 inches (8.9 x 8.9 x 4.5 centimeters) Weight: 1 lb. (.45 kg) Output: 13.6 VDC (internally adjustable 12.6 -14.5) Ripple: 150 mV P-P maximum Regulation: 1% Line/Load Switching Frequency: 40 kHz Efficiency: 85% - Typical. Isolation: Output/Chassis; Input/chassis: 250 VDC Duty Cycle Ratings*: Intermittent: 20 minutes max on time, 20% duty. current limit set at approx. 105% of intermittent rating. Continuous: 24 hours, 100% duty *24-12-3: 2-minute max. on time Idle Current: Less than 100 mA (including power "ON" light) Operating Temp Specifications: 0-50 degrees C, Derate Linearly From 100% @ 40 degrees C To 50% @ 50 degrees C. Thermal shutdown @ 70 degrees C Case Temperature Model 24-12-3: Full output -25 degrees to +30 degrees C; Derate linearly from 100% @ +30 degrees C to 45% @ +50 degrees C Mechanical Specifications: Powder-coated aluminum heat sink case Front panel terminal block Heavy-duty mounting flange Conformal coated PC board Options:Operation as battery charger or parallel redundant operation* - derate to continuous duty rating (contact factory)This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.