HD SERIES
300 A Heavy-Duty High-Current Latching Relays
Specifications
Current Rating Continuous:
Max Voltage Rating
Agency Approval - Shock:
Agency Approval - Vibration:
Ingress Protection:
Mounting Method:
300 A (4/0 Input & Output Cable)
16 V, 32 V
10 G's
880086
8 G's
IP67/IP69K
Base Mounting Holes
SPST
Circuitry:
Ignition Protection:
Input Terminals:
UL 94V-0
3/8"-16 Copper Studs
4 Mounting Holes (5.55 mm - 5.88 mm)
Mounting Method:
Operating Temp Range:
Operational: -50°C to 85°C
Non‐Operational: ‐55°C to 105°C
Description
Applications
HD Series 300 A Heavy-Duty High-Current Latching Relays
are remotely operated bistable relay disconnects designed
for high-current circuits and applications that demand high
performance, such as large inverter loads and high ambient
temperature situations. Sealed to an IP67/IP69K rating,
these heavy-duty automotive relays are built to withstand
dust, water, and harsh weather, as well as environments
with high shock and vibration.
• Heavy-Duty Vehicles
• Construction Vehicles
• Agricultural Equipment
• Military Vehicles
• Heavy-Duty Lifting Equipment
Features and Benefits
• Supports high-current continuous loads up to 300 A and
intermittent loads up to 1500 A for 10 seconds
The HD series bistable relays provide significant cost and
weight benefits by eliminating the need to route heavy
copper cables to more conveniently located mechanical-
only disconnects. Cables can instead be routed directly
to loads with the HD series relay positioned close to the
battery or in line with the desired cable routing. Remote
control of the HD latching relay can then be located in any
convenient location on the vehicle with a finewire harness
linking the HD relay to the control switch.
• Available with a 12 VDC coil or 24 VDC coil
• Magnetically latched bistable or electronically controlled
magnetically latched bistable operation draws no current
in the On or Off position for low power consumption
• Remote operation eliminates long runs of heavy cable,
minimizing cable complexity, cost, and vehicle weight
• Sealed to an IP67/IP69K rating for protection against
dust, debris, and water ingress
Web Resources
Download 2D print, installation guide and technical
resources at: littelfuse.com/HD
• Silver alloy contacts assure the lowest voltage drop/
resistance and extend cycling life
• Models 880159 and 880160 are electronically controlled,
allowing a single low-current signal to control the
bistable relay.
Ordering Information
PART
NUMBER
DESCRIPTION
HOUSING
HARDWARE
CONTACTS CONNECTOR
COIL TYPE
6-Pin Deutch Magnetically Latched
DTM Bistable
6-Pin Deutch Magnetically Latched
16 V 300 A Heavy-Duty High-Current Magnetically Latching
Bistable Relay with 12 V Coil
Black
880086
880088
Hex nuts 3/8"-16 Silver Alloy
Hex nuts 3/8"-16 Silver Alloy
Thermoplastic
32 V 300 A Heavy-Duty High-Current Magnetically Latching
Bistable Relay with 24 V Coil
Black
Thermoplastic
DTM
Bistable
Electronically Controlled
Magnetically Latched
Bistable
Electronically Controlled
Magnetically Latched
Bistable
6-Pin Deutch
DTM
16 V 300 A Heavy-Duty High-Current Electronically Controlled
Magnetically Latching Bistable Relay with 12 V Coil
Black
880159
880160
Hex nuts 3/8"-16 Silver Alloy
Hex nuts 3/8"-16 Silver Alloy
Thermoplastic
6-Pin Deutch
DTM
32 V 300 A Heavy-Duty High-Current Electronically Controlled
Magnetically Latching Bistable Relay with 24 V Coil
Black
Thermoplastic
Littelfuse.com
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090723-A
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