Key Features

• EMS1250UL serves as an automotive or stationary DC-to-AC inverter with automatic line-to-battery transfer and integrated battery charger
• Supports 120V AC output from a 120V AC line power source or 12V DC battery source
• 16.6 millisecond automatic transfer between line and battery power supports UPS protection during blackouts and voltage fluctuations for equipment compatible with a one cycle transfer time
• 1250 watts continuous AC output in inverter mode, 1440 watts continuous AC output in AC mode
• Double Boost™ inverter output supports momentary startup loads up to 200% of the continuous rating for up to 10 seconds
• OverPower™ inverter output supports longer duration overloads to 150% for 1-60 minutes under ideal battery and temperature conditions. (For best results, utilize OverPower usage for as short of a duration as possible, ensure battery bank and cabling is able to provide full nominal DC voltage under load and allow inverter/charger to fully cool before and after OverPower usage.)
• 3 stage, selectable 14/55 amp battery charger with adjustable settings for wet/gel battery types offers fast, reliable battery recharging
• Anderson quick connect DC wiring terminals safely accept input from attached battery bank
• Protected hardwire output passes 120V line power or inverter output through to connected equipment
• Reliability enhanced large-transformer design tested to UL (USA) and CSA (Canada) standards
• Moisture-resistant construction enables vehicular or marine operation in high humidity environments
• 3 position operating mode switch supports "AUTO" mode to enable automatic transfer between DC and AC modes, CHARGE-ONLY to maintain a full battery charge when AC is present without auto transfer and SYSTEM OFF settings
  Set of six front panel LEDs display AC/DC operational modes, overload status, DC voltage level, shutdown status and system fault status
• Set of 4 configuration dipswitches support wet/gel battery charging profiles, adjustable 135/145V high voltage auto transfer during
  overvoltages and selectable 75/85/95/105V AC low voltage auto transfer during brownouts
• Set of 4 additional configuration dipswitches support 4 levels of charger limiting relative to output load size, a battery equalization program and battery charger low/high/off settings
• Resettable 12A charger AC input breaker and resettable 12A AC output breaker and automatic 2 speed cooling fan protect the inverter from load and temperature related failures
• Grounding lug properly connects the inverter/charger system to earth ground or vehicle grounding system
• Automatic overload and thermal shutoff safely turns off inverter as excessive loads or overheating conditions develop
• Front panel remote control connector enables remote off/on switching (APSRM4 remote control switch with status LED display and 50 ft cable included). APSRM4 accessory also includes user configurable jacks to support inverter shutoff or startup as a vehicle ignition is engaged
• Load sensing control dial enables adjustable load threshold required to automatically turn the inverter on and off in DC mode as load
  conditions change.

Typical Applications

• Versatile inverter/charger system with auto-transfer switching serves as an automotive inverter for EMS applications (ambulance,
  emergency or police vehicles); a standalone alternative power source for backup power operation and as an uninterruptible power supply (UPS) for items compatible with a 16.6 millisecond transfer time.

Package Includes

• EMS1250UL Inverter/Charger
• Instruction manual with warranty information
• Wired Remote Switch with full LED status indicators (model APSRM4)
• 2 Anderson DC connectors (1 on the unit and 1 included in the box)