Siemens 6ES7422-1HH00-0AA0
SM 422 relay output, 16 DO, 5 A
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Delivery options
Siemens SIMATIC S7-400 SM 422 relay output module: 16 relay outputs for 5 to 230 V AC, 5 A each, in groups of 2.
- Manufacturer
- Siemens
- Manufacturer part no.
- 6ES7422-1HH00-0AA0
- Product family
- SIMATIC S7-400 PLC CPUs, I/O and Function Modules
- Type
- Digital output module
- Category
- PLCs and I/O › Digital I/O modules
- Lifecycle
- Discontinued
- OEM successor
- Not stated
- Technical datasheet
- Data sheet
Technical specifications
- Manufacturer
- Siemens
- Manufacturer part no.
- 6ES7422-1HH00-0AA0
- Type
- Digital output module
- Application
- Relay output module
- Used with
- SIMATIC S7-400 rack
- Load voltage L+ / Rated value (DC)
- 60 V
- Load voltage L+ / permissible range, lower limit (DC)
- 1 V
- Load voltage L+ / permissible range, upper limit (DC)
- 60 V
- Load voltage L1 / Rated value (AC)
- 230 V
- Load voltage L1 / permissible range, lower limit (AC)
- 2 V
- Load voltage L1 / permissible range, upper limit (AC)
- 264 V
- Input current / from backplane bus 5 V DC, max.
- 1 A
- Power loss, typ.
- 4.5 W
- Number of digital outputs
- 16; Relays
- Digital outputs / Short-circuit protection
- No
- Controlling a digital input
- Yes; possible
- Digital outputs / Size of motor starters according to NEMA, max.
- Size 5 according to NEMA
- Switching capacity of the outputs / on lamp load, max.
- 60 W
- Output current / for signal "1" rated value
- 5 A
- Output current / for signal "1" minimum load current
- 11 mA
- Parallel switching of two outputs / for uprating
- No; Not possible
- Parallel switching of two outputs / for redundant control of a load
- Yes; Possible (only outputs with the same load voltage)
- Switching frequency / with resistive load, max.
- 10 Hz
- Switching frequency / With inductive load (to IEC 60947-5-1, DC13/AC15), max.
- 1 Hz
- Switching frequency / on lamp load, max.
- 1 Hz
- Switching frequency / mechanical, max.
- 20 Hz
- Total current of the outputs (per group) / all mounting positions / up to 40 °C, max.
- 10 A; 10 A with fan subassembly
- Total current of the outputs (per group) / all mounting positions / up to 60 °C, max.
- 5 A; 10 A with fan subassembly
- Relay outputs / Number of operating cycles, max.
- 100 000; 100 000 (AC-15 / DC-13); 3 000 000 mechanical
- Relay outputs / Switching capacity of contacts / with inductive load, max.
- 5 A; 5 A (30 V DC), 5 A (230 V AC)
Show all 44 specificationsShow fewer
- Relay outputs / Switching capacity of contacts / with 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)
- Relay outputs / Switching capacity of contacts / Thermal continuous current, max.
- 5 A
- Cable length / shielded, max.
- 1 000 m
- Cable length / unshielded, max.
- 600 m
- Interrupts/diagnostics/status information / Diagnostics function
- No
- Diagnostics indication LED / Status indicator digital output (green)
- Yes; per channel
- Potential separation digital outputs / between the channels
- Yes
- Potential separation digital outputs / between the channels, in groups of
- 2
- Potential separation digital outputs / between the channels and backplane bus
- Yes
- Isolation tested with
- 1 500 V AC
- Width
- 25 mm
- Height
- 290 mm
- Depth
- 210 mm
- Weight, approx.
- 700 g
Technical documents (1)
Key features
- 16 relay outputs, 5 A rated
- Load voltage up to 230 V AC or 60 V DC
- Isolated in groups of 2
- 100,000 operating cycles at AC-15/DC-13; 3,000,000 mechanical
- Discontinued by Siemens on 1 October 2026
About the Siemens 6ES7422-1HH00-0AA0
The Siemens 6ES7422-1HH00-0AA0 is the relay version of the SM 422: 16 relays rated 5 A, isolated in pairs, for AC loads up to 230 V or DC loads up to 60 V. Siemens's data sheet gives 5 A at 30 V DC or 230 V AC (1.2 A at 60 V DC), up to 60 W of lamp load and 100,000 operating cycles at AC-15/DC-13. SiePortal shows its phase-out announced on 1 October 2025 and its product cancellation on 1 October 2026.
What is the 6ES7422-1HH00-0AA0 used for?
It switches loads on separate circuits and voltages from an S7-400 CPU through relay contacts.
Lifecycle and successor
Discontinued.
Before you order
What to photograph or confirm so the right unit is quoted.
Check the order number on the module: 1HH00 is the relay version of the SM 422.
Other parts in the Siemens SIMATIC S7-400 family
Listed for reference. They differ from the 6ES7422-1HH00-0AA0 in rating, supply, interface or function and are not interchangeable with it unless Siemens says so. Match the part number on your unit.
| Product | Type | Lifecycle | Qty Available | Price | Action |
|---|---|---|---|---|---|
| Siemens 6ES7421-1BL01-0AA0SM 421 digital input, 32 DI, 24 V DC | Digital input module | Discontinued | On Request | On request | View |
| Siemens 6ES7422-1BL00-0AA0SM 422 digital output, 32 DO, 24 V DC, 0.5 A | Digital output module | Discontinued | On Request | On request | View |
| Siemens 6ES7421-7BH01-0AB0SM 421 digital input, 16 DI, 24 V DC, interrupt and diagnostics | Digital input module | Discontinued | On Request | On request | View |
| Siemens 6ES7421-1EL00-0AA0SM 421 digital input, 32 DI, 120 V AC/DC | Digital input module | Discontinued | On Request | On request | View |
| Siemens 6ES7421-1FH20-0AA0SM 421 digital input, 16 DI, 120/230 V AC/DC | Digital input module | Discontinued | On Request | On request | View |
| Siemens 6ES7421-7DH00-0AB0SM 421 digital input, 16 DI, 24 to 60 V AC/DC, interrupt and diagnostics | Digital input module | Discontinued | On Request | On request | View |
| Siemens 6ES7422-1BH11-0AA0SM 422 digital output, 16 DO, 24 V DC, 2 A | Digital output module | Discontinued | On Request | On request | View |
| Siemens 6ES7422-7BL00-0AB0SM 422 digital output, 32 DO, 24 V DC, 0.5 A, diagnostics | Digital output module | Discontinued | On Request | On request | View |
| Siemens 6ES7422-1FH00-0AA0SM 422 digital output, 16 DO, 120/230 V AC, 2 A | Digital output module | Discontinued | On Request | On request | View |
| Siemens 6ES7431-1KF00-0AB0SM 431 analog input, 8 AI, 13 bit, U/I/R | Analog input module | Discontinued | On Request | On request | View |
| Siemens 6ES7431-1KF10-0AB0SM 431 analog input, 8 AI, 14 bit, U/I/R/thermocouple/RTD | Analog input module | Discontinued | On Request | On request | View |
| Siemens 6ES7431-1KF20-0AB0SM 431 analog input, 8 AI, 14 bit, 0.42 ms for all channels | Analog input module | Discontinued | On Request | On request | View |
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