2810300

Overview

The Littelfuse model 2810300 is a manual battery disconnect switch designed for commercial vehicle applications. It operates at a continuous current rating of 40 A and supports voltage ratings of 12 V, 24 V, and 48 V DC systems. The device utilizes a single-pole, single-throw (SPST) circuit configuration to isolate the main battery from the electrical system. This component provides a direct, operator-actuated means of safety isolation, storage management, and anti-theft protection for heavy-duty equipment.

Feature Summary

• Provides direct operator-actuated isolation of the main battery from the vehicle or equipment electrical system
• Supports multiple actuator styles including push-button, T-handle, rotary knob, key, and lever options
• Available in housings made of various metals or thermoplastic materials for heavy-duty marine and commercial use
• Offers water-resistant and waterproof battery disconnect options meeting Ingress Protection standards

Applications

• Trucks and buses
• Construction equipment
• Recreational vehicles
• Fleet vehicles
• Marine vessels

Procurement Notes

Verify that the selected part number matches the required actuator style and housing material for the specific installation environment. Confirm that the continuous current rating of 40 A meets the peak operational demands of the target vehicle or equipment. Ensure compatibility with the system voltage, whether 12 V, 24 V, or 48 V DC. Check for necessary ingress protection ratings if the application involves exposure to water or harsh environmental conditions. Cross-reference official Littelfuse documentation to confirm active status and compliance with applicable marine or commercial vehicle standards before finalizing procurement.

Selection Notes

Select this component based on the need for a reliable manual cutoff mechanism in high-current DC systems. Evaluate the available actuator styles to determine the most suitable interface for operator accessibility and safety requirements. Consider the housing material options, such as metal or thermoplastic, depending on the mechanical durability needed for the specific application. Assess the required ingress protection level to ensure adequate sealing against moisture and debris in marine or outdoor environments. Verify that the SPST circuitry aligns with the simple isolation needs of the electrical architecture.

Part Context

This manual battery disconnect switch belongs to the Littelfuse Commercial Vehicle Products line, which specializes in safety and isolation components for heavy-duty transportation. These switches are engineered to meet rigorous standards for marine and commercial vehicle applications. The product series offers a range of current ratings from 40 A to 600 A, providing scalable solutions for various vehicle sizes and power requirements. The design focuses on robust construction and reliable performance in demanding operational settings.

Replacement Considerations

Consult official Littelfuse substitution guides for verified alternative part numbers within the same series. Ensure any replacement maintains the 40 A continuous current rating and compatible voltage specifications. Verify that the substitute component matches the required actuator style and mounting configuration. Confirm that the replacement meets the same Ingress Protection standards if environmental sealing is critical. Do not assume cross-compatibility with other manufacturers' products without explicit manufacturer validation.