24-12-3 DC Converter Convert 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.