SD SERIES
9-32 V 600 A High-Current Bistable Latching Relay with
Auxiliary Contacts
Specifications
Max Voltage Rating:
32 V
Ingress Protection:
Coil Voltage:
IP 66, 69K
12 V-24 V
UL94-V0
Ignition Protection:
Current Rating Inrush:
125A @ 12VDC, 30 sec ON, 5 min OFF,
150A @ 12VDC, 5 sec ON, 5 min OFF
Temperature:
-40°C to 85°C
Contacts Voltage Rating Max:
32V
Contacts Voltage Rating Min:
9V (Low voltage detection)
1A Rated
880103
Auxiliary Contacts:
Description
Applications
• Heavy-DutyTrucks
The SD Series High-Current Bistable Latching Relay
supports remote power switching applications requiring
high continuous current passage, large engine starting
needs, and high ambient temperatures.
• Construction Vehicles
• Agricultural Equipment
• Heavy-Duty Lifting Equipment
• Material Handling
Capable of being remotely controlled with a fine wire
harness, the SD high-current automotive relay eliminates
the need to route heavy copper cables directly to
accessible mechanical disconnects. Cables can instead be
routed directly to loads with the SD relay positioned close
to the battery or in line with the desired cable routing.
As a bistable latching relay, it draws no current in the on or
off state, which reduces overall power consumption, and
its compact footprint is ideal for installations with limited
space.
Features and Benefits
• Available as a single-pole, single-throw (SPST) latching
relay or double-pole, single-throw (DPST) latching relay
• Bistable internal mechanism draws no current in the
on or off state, which reduces power consumption and
waste heat
In addition, the SD relay is designed to perform in harsh
commercial vehicle environments, carrying both UL 94
V-0 flammability and IP66/IP69K ratings and meeting US
DOT 11579 and EU ADR requirements for hazmat vehicle
compliance.
• Thermoplastic nylon housing with a UL 94 V-0
flammability rating and an IP66/IP69K rating for
protection against dust, water, contaminants, and harsh
conditions that are common in automotive environments
Web Resources
Download 2D print, installation guide and technical
resources at: littelfuse.com/SD
• Supports US DOT 11579 and EU ADR requirements for
hazmat vehicle compliance
• Dedicated 24-hour output to power your tachograph or
other keep-alive functions
• Local and remote indication of the state of the relay
• Compact footprint saves space in your installation
Ordering Information
PART
NUMBER
CURRENT RATING
CONTINUOUS
INGRESS
PROTECTION
CURRENT
RATING INRUSH
MOUNTING
METHOD
DESCRIPTION
CIRCUITRY
CONNECTOR
MOLEX
33472-1206 MX150 FEMALE
SEALED CONNECTOR
Flange with (4)
M6 or ꢀ mounting
holes
9-32 V 600 A SPST High-Current
Latching Relay
880103
880107
600A total
IP66, IP69K
IP66, IP69K
SPST
3,000 A, 1 SEC
2,000 A, 1 SEC
MOLEX
33472-1206 MX150 FEMALE
SEALED CONNECTOR
Flange with (4)
M6 or ꢀ mounting
holes
9-32 V 600 A DPST High-Current
Latching Relay
"600A (300A Per Pole)
DPST
Littelfuse.com
© 2022 Littelfuse, Inc.
122022-A
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