> Spare parts>Electric and Electronic spare parts>AUTO-MASKIN>Auto-Maskin SDU 404 Safety Shutdown Unit

AUTO-MASKIN

Manufacturers

Viewed products

New products

New Auto-Maskin SDU 404 Safety Shutdown Unit — Manufacturer: Auto-Maskin, Model: SDU 404 (Marine Pro safety shutdown unit), Manufacturers part number: 1006418, Performance specification: 4-channel independent engine safety shutdown unit for smaller engines; overspeed with test mode, Class: IACS type approved: DNV (TAA00000Z6), LR (LR23405374TA), BV (20519/D0), ABS (PDA 24-2515035-1-PDA), KR (CPH17663-AC001), CCS (BG23PTB00001) – SDU 404; LR LR22131218SS-01, Other: Switch inputs with wire-break and short-circuit detection, tacho input (passive or active pickup), 2 x 4-20 mA, 1 x PT100 / PT1000, shutdown relay 0.7 A, other relays 0.7 A, configurable output 1.8 A, Weight: 0.4 kg, Volt: 18-32 VDC (24 VDC nominal), Working temperature max, celsius degrees: Operating +5 to +70 °C, storage -30 to +80 °C; IP30 (for cabinet mounting), Remarks: Gear and rpm interlocks on all channels, secondary shutdown override for oil mist, rpm channel with loop monitoring, LED fault / status indication; configured automatically from 200 / 400 Series DCU, DIMENSIONs: 101 x 105 x 52 mm (W x H x D) View larger

Auto-Maskin SDU 404 Safety Shutdown Unit

AM1006418

New product

Auto-Maskin SDU 404 4-channel safety shutdown unit for smaller engines, IACS type approved.

More details

Price on request

or call +47 908 92 500

Data sheet

Manufacturer Auto-Maskin
Model SDU 404 (Marine Pro safety shutdown unit)
Manufacturers part number 1006418
Performance specification 4-channel independent engine safety shutdown unit for smaller engines; overspeed with test mode
Class IACS type approved: DNV (TAA00000Z6), LR (LR23405374TA), BV (20519/D0), ABS (PDA 24-2515035-1-PDA), KR (CPH17663-AC001), CCS (BG23PTB00001) – SDU 404; LR LR22131218SS-01
Other Switch inputs with wire-break and short-circuit detection, tacho input (passive or active pickup), 2 x 4-20 mA, 1 x PT100 / PT1000, shutdown relay 0.7 A, other relays 0.7 A, configurable output 1.8 A
Weight 0.4 kg
Volt 18-32 VDC (24 VDC nominal)
Working temperature max, celsius degrees Operating +5 to +70 °C, storage -30 to +80 °C; IP30 (for cabinet mounting)
Remarks Gear and rpm interlocks on all channels, secondary shutdown override for oil mist, rpm channel with loop monitoring, LED fault / status indication; configured automatically from 200 / 400 Series DCU
DIMENSIONs 101 x 105 x 52 mm (W x H x D)

More info

The SDU 404 is the independent safety shutdown unit that the classification societies require next to the engine controller: it stops the engine on overspeed or a critical fault even if the main panel fails. With 4 shutdown channels it is made for smaller engines, on mechanical as well as electronic engines.

  • Wire-break and short-circuit monitoring on the inputs, rpm channel with loop monitoring and an overspeed test mode
  • Gear and rpm interlocks on every channel and secondary shutdown override for oil-mist detection
  • LEDs for fault and status on the unit; configured automatically from the connected Marine Pro 200 or 400 DCU such as the DCU 410E
  • DIN-rail unit for cabinet mounting, 18–32 VDC

IACS type approved – certificates in the downloads.

Most units are delivered from stock or at short notice from the manufacturer.

Contact us for price and delivery time.

Accessories

Download

DNV Type Approval TAA00000Z6

Marine Pro 400 Series, rev. 8

Download (99.77k)

LR Type Approval LR23405374TA

Marine Pro 400 Series

Download (928.4k)

BV Type Approval 20519/D0

Marine Pro 400 Series

Download (116.27k)

ABS Product Design Assessment 24-2515035-1-PDA

Marine Pro 400 Series

Download (334.43k)

KR Type Approval CPH17663-AC001

Marine Pro 400 Series

Download (307.25k)

CCS Type Approval BG23PTB00001

Marine Pro 400 Series

Download (400.19k)

SDU 4xx Product Sheet

Auto-Maskin, v1.1 (2025)

Download (724.5k)

SDU 404 / 420 Data Sheet

Auto-Maskin, rev. 12 Feb 2026

Download (162.35k)

SDU 404 / 420 Installation Manual

Auto-Maskin (2024)

Download (1.04M)

SDU 404 / 420 User's Manual

Auto-Maskin, Jan 2022

Download (683.08k)

EU Declaration of Conformity SDU 404 / 420

Auto-Maskin

Download (65.64k)

LR Certificate LR22131218SS-01 (SDU 404/410/420)

Lloyd's Register, engine safety shutdown unit

Download (766.91k)

SDU 404 Quick Installation Guide

Auto-Maskin (2026)

Download (348.08k)