Municipal buses remain the workhorses of public transportation. Electronic devices made by Littelfuse ensure commuter, shuttle, and transit buses






The MDB Series 58 V 200 A Waterproof MIDI® Fuse Power Distribution Box is an internally bussed fuse holder designed for the high current loads and harsh conditions typically seen in applications such as construction vehicles and agricultural equipment. Effectively acting as a power distribution module, the rugged fuse box is available in configurations for holding two or three MIDI® or BF1 fuses (sold separately) to meet your application requirements.
The sealed, waterproof fuse box carries IPX7 and IPX9K ratings, making it ideal for applications close to the battery or for mounting in exposed locations. To keep the sealed cover securely in place, the MDB Series fuse holder features AssureLatch™ yellow positive-sealing latches.
- Internally bussed for high-current power distribution
- Accepts two or three MIDI® fuses (sold separately), depending on the configuration
- Sealed box has IPX7 and IPX9K ratings to ensure a waterproof enclosure that can be mounted in exposed locations or near the battery
- AssureLatch™ yellow positive-sealing latches keep the cover securely in place while allowing for fast service
- Cover features a built-in spot for keeping a spare fuse, which allows simple replacement
- Outside of the cover has a spot for a fuse label to identify the protected circuits
- Included tether connects the cover to the base to prevent loss during service
- Optional cable seals are available for various wire sizes
- M5 thread studs are included for fuse installation
MDB Parts
Filters
Part Number | Actions | Fuse Type | Input Terminals | Output Terminals | Current Rating (Continuous) in Amps | Ingress Protection | Number of Cavities | Dimensions | Temperature Maximum (°C) | Temperature Minimum (°C) | Agency Approval - Shock | Agency Approval - Vibration | Mounting Method | Housing | Recommended Torque |
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Part Number | Actions | Fuse Type | Input Terminals | Output Terminals | Current Rating (Continuous) in Amps | Ingress Protection | Number of Cavities | Dimensions | Temperature Maximum (°C) | Temperature Minimum (°C) | Agency Approval - Shock | Agency Approval - Vibration | Mounting Method | Housing | Recommended Torque | |
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MIDI | M5 Stud | M5 Stud | 200 | IP67, IP69K | 2 | 1.3425 H x 3.322 W x 4.7845 L in. (38 x 68 x 131 mm) | 85 | -40 | Bolt Down | Mounting: 6-8Nm – Fuse: 5Nm | ||||||
MIDI | M5 Stud | M5 Stud | 200 | 2 | 1.3425 H x 3.322 W x 4.7845 L in. (38 x 68 x 131 mm) | 85 | -40 | Bolt Down | UL94-V1 | Mounting: 6-8Nm – Fuse: 5Nm | ||||||
MIDI | M5 Stud | M5 Stud | 200 | IP67, IP69K | 3 | 5.147 H x 1.335 W x 3.321 L in. (38 x 68 x 131 mm) | 85 | -40 | Bolt Down | UL94-V2 | Mounting: 6-8Nm – Fuse: 5Nm | |||||
MIDI | M5 Stud | M5 Stud | 200 | 3 | 1.3425 H x 3.322 W x 4.7845 L in. (38 x 68 x 131 mm) | 85 | -40 | Bolt Down | UL94-V3 | Mounting: 6-8Nm – Fuse: 5Nm |
MDB Applications


Surface and underground mines cannot produce unless excavators, bulldozers, tractor scrapers, and dump trucks operate consistently, efficiently,

When tractor-trailers and tanker trucks work, so does the economy. Littelfuse keeps the literal wheels of commerce turning by making overcurrent

Littelfuse produces electronic components that help electric school buses and buses with internal combustion engines operate efficiently and
Highlights Section
- Construction Vehicles
- Agricultural Equipment
- High Current Loads
Series: MDB Resources

Power Distribution Modules Brochure
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Littelfuse-Commercial Vehicle Catalog
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Fuse block and Power Distribution Modules Series Spotlight
See which fuses and fuse holders an LX Series dc power distribution module can accommodate.

Download 3D Models of Commercial Vehicle Products
Gain anytime access to 3D models of Littelfuse dc power distribution modules that you can plug into your OEM equipment designs.

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