The Kussmaul Load Manager is a precision solid-state load management controller designed to sequence electrical loads, monitor vehicle battery voltage, and automatically shed non-critical loads to help prevent electrical system overload. Designed for fire apparatus, ambulances, rescue vehicles, command vehicles, and other specialty vehicle electrical systems, the Load Manager helps maintain system voltage while reducing power surges that can affect sensitive onboard electronic equipment.

The Load Manager controls up to seven relay outputs, sequentially energizing and de-energizing connected relays at 1/2-second intervals through a Master Control switch. Individual switches can be installed to select which outputs are active and allow operators to manually turn individual outputs ON or OFF as needed. Gradually applying and removing electrical loads helps minimize sudden voltage drops and alternator voltage transients caused by simultaneously switching multiple high-demand circuits.

In addition to load sequencing, the Load Manager continuously monitors the vehicle's 12 VDC battery system. When electrical demand exceeds alternator output and system voltage drops below the 11.5-volt set point, the controller automatically begins shedding selected loads. Up to five outputs can be automatically load shed, and only the number of loads necessary to maintain system voltage are de-energized. The load shed priority sequence can be programmed using internal switches accessible through a removable cap.

An output indicator terminal allows connection of a remote LED to indicate when the load shed function is active. A remote bypass switch can also be installed to completely bypass automatic load management and allow manual relay operation. The Load Manager controls external relays, features a plug-in connector for simplified installation, and is backed by a 3-year manufacturer's warranty.

Features

• Precision solid-state controller for emergency and specialty vehicle electrical systems
• Controls and sequences up to seven relay outputs
• Sequentially energizes connected relays at 1/2-second intervals
• Sequentially de-energizes connected relays at 1/2-second intervals
• Helps prevent sudden voltage drops when multiple electrical loads are activated
• Helps reduce alternator voltage transients when multiple electrical loads are deactivated
• Continuously monitors vehicle battery system voltage
• Automatically sheds non-critical loads when electrical demand exceeds available alternator output
• Up to five outputs can be automatically controlled by the load shed function
• Sheds only as many loads as necessary to help maintain system voltage
• Programmable load shed priority allows critical equipment to remain powered longer
• Individual switches can be installed to select and manually control connected outputs
• Master Control switch initiates sequential load activation and deactivation
• Remote indicator output allows connection of an LED to show when load shedding is active
• Supports installation of a remote bypass switch for manual relay operation
• Controls external load relays for flexible vehicle electrical system integration
• Plug-in connector simplifies installation and wiring
• Ideal for fire apparatus, ambulances, rescue vehicles, command vehicles, and specialty vehicle electrical systems
• Backed by a 3-year manufacturer's warranty

Specifications

• Manufacturer: Kussmaul Electronics
• Product Type: Solid-State Load Management and Sequencing Controller
• Model: Load Manager
• Load Management: Yes
• Input Voltage: 12 VDC
• Number of Loads: 7
• Maximum Automatically Shed Outputs: 5
• Load Sequencing Interval: 0.5 Seconds
• Set Point: 11.5 Volts
• Load Shed Priority: Programmable
• Master Control: Sequential Relay Activation and Deactivation
• Individual Output Control: Supported with User-Installed Switches
• Remote Load Shed Indicator Output: Yes
• Remote Manual Override: Supported with User-Installed Bypass Switch
• Output: 40 Ohms to Drive External Relays
• Installation Connection: Plug-In Connector
• Weight: 0.5 lbs.
• Warranty: 3-Year Manufacturer's Warranty