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Siemens 6ES7422-1HH00-0AA0 — Digital Output Modules

Siemens 6ES7422-1HH00-0AA0 SM 422 Digital Output Module, 16 Relay DO

MPN6ES7422-1HH00-0AA0
NRND

Siemens 6ES7422-1HH00-0AA0 — now in phase-out and being discontinued. Supplied from remaining channel stock; full specifications, lifecycle and same-series options are below.

$500.39 – $1,267.00Ref. price · indicative, final on quote
Siemens 6ES7422-1HH00-0AA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jun 2026

Specifications

6ES7422-1HH00-0AA0 — Outputs
ParameterValue
Digital outputs16; Relays
6ES7422-1HH00-0AA0 — Electrical
ParameterValue
Rated value (DC)60 V
Output current, resistive load, max.5 A; 5 A (30 V DC), 5 A (230 V AC), 1.2 A (60 V DC), 0.2 A (125 V DC)
Output current at signal "1" (rated)5 A
Permissible range, upper limit (DC)60 V
Permissible range, lower limit (DC)1 V
Output current up to 60 °C, max.5 A; 10 A with fan subassembly
Current consumption from backplane bus (5 V DC), max.1 A
Power dissipation (typ.)4.5 W
Isolation between channelsYes
Isolation between channels and backplane busYes
Isolation, channels in groups of2
Isolation test voltage1 500 V AC
6ES7422-1HH00-0AA0 — Protection & Diagnostics
ParameterValue
Short-circuit protectionNo
Diagnostics functionNo
Redundant load controlYes; Possible (only outputs with the same load voltage)
Output can drive a digital inputYes; possible
6ES7422-1HH00-0AA0 — Performance
ParameterValue
Switching frequency, inductive load, max.5 A; 5 A (30 V DC), 5 A (230 V AC)
Switching frequency, lamp load, max.1 Hz
6ES7422-1HH00-0AA0 — Mechanical & Connection
ParameterValue
Cable length, unshielded, max.600 m
Cable length, shielded, max.1 000 m
Width25 mm
Height290 mm
Depth210 mm
Weight (approx.)700 g

Product details

Overview

The 6ES7422-1HH00-0AA0 is a Siemens SM 422 digital output module for the SIMATIC S7-400 system, providing 16 relay outputs rated at 5 A per channel across a 5..230 V AC or 1..60 V DC range. The module draws 4.5 W from the backplane, occupies a 25 mm slot width, and is classified as Size 5 per NEMA. RoHS compliance dates from 01-03-08.

Each of the 16 relay outputs switches up to 5 A continuous at 230 V AC (resistive) or 60 V DC. The relay contacts are rated for 100 000 electrical cycles under AC-15 or DC-13 loads, and 3 000 000 mechanical cycles — a figure that governs maintenance intervals in high-duty applications. Each channel has a per-channel status LED for quick fault isolation on the cabinet door. Digital input control is possible, allowing the module to be read back for diagnostics, though no onboard diagnostics block is implemented.

Applications

This SM 422 relay output module is used in SIMATIC S7-400 racks to switch AC or DC loads such as contactors, solenoid valves, motor starters, and indicator lamps in industrial machine control, conveyor systems, and process skids. The 16 isolated channels suit applications requiring galvanic separation between the PLC backplane and field devices.

MPN
6ES7422-1HH00-0AA0