Load Manager 1H 24V

The Load Manager 1H 24V is a compact, economical load management controller designed to monitor a 24 VDC electrical system and automatically shed one electrical load when low-voltage conditions are detected. This device is specifically tailored for use in fire apparatus, ambulances, rescue vehicles, command vehicles, and other specialty vehicles where maintaining stable electrical systems is critical. The Load Manager 1H helps protect battery system performance by disconnecting non-critical equipment when system voltage falls below the selected set point, ensuring that essential components remain powered during low-voltage events.

The Load Manager 1H features a high-hysteresis design that prevents a shed load from immediately cycling back ON as system voltage begins to recover. Once the relay operates due to low voltage, the connected load remains disconnected until the monitored voltage rises more than 1.4 volts above the set point. This differential helps prevent rapid relay cycling and provides more stable load management during fluctuating electrical system conditions, which is particularly important in environments where power can be inconsistent or subject to sudden drops.

The voltage set point and hysteresis are field adjustable, with an adjustable voltage range of 21 to 26 volts and a standard set point of 24.0 volts. Green and red LED indicators provide clear system status, allowing operators to quickly identify whether the system is operating within normal parameters or experiencing under-voltage conditions. The heavy-duty 30-amp relay contacts can interrupt the connected load or operate a remote indicator light, offering additional visibility into system health. When system voltage recovers sufficiently, the Load Manager 1H automatically resets and restores normal operation, ensuring continuous and reliable performance without requiring manual intervention.

Features

• Automatically manages and sheds one electrical load during low-voltage conditions
• Designed for 24 VDC vehicle electrical systems
• Continuously monitors DC system voltage
• Heavy-duty 30-amp relay contacts provide dependable load control
• High-hysteresis design helps prevent rapid relay cycling
• Maintains the shed condition until system voltage rises more than 1.4 volts above the set point
• Field-adjustable voltage set point and hysteresis
• Adjustable voltage range from 21 to 26 volts
• Standard voltage set point of 24.0 volts
• Relay operates to interrupt the connected electrical load
• Can operate a remote indicator light for additional system status indication
• Green LED indicates normal system voltage
• Red LED indicates an under-voltage condition
• Automatic reset restores normal operation when system voltage sufficiently recovers
• Compact design simplifies installation in emergency and specialty vehicles
• 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: Single-Load Low-Voltage Management Controller
• Model: Load Manager 1H 24V
• Input Voltage: 24 VDC
• Number of Loads: 1
• Adjustable Voltage Range: 21 to 26 Volts
• Standard Set Point: 24.0 Volts
• Hysteresis: 1.4 Volts
• Relay Contact Rating: 30 Amps
• Relay Function: Interrupts Connected Load During Low-Voltage Conditions
• Automatic Reset: Yes
• Indicators: Green LED – Normal Voltage; Red LED – Under Voltage
• Remote Indicator Capability: Yes
• Field-Adjustable Set Point: Yes
• Field-Adjustable Hysteresis: Yes
• Weight: 0.25 lbs.
• Warranty: 3-Year Manufacturer's Warranty

Availability and lead time are subject to confirmation.