6ES7322-1HH01-0AA0

Technical specifications

Manufacturer

Siemens

Manufacturer part no.

6ES7322-1HH01-0AA0

Type

Digital output module

Application

Relay output module

Used with

SIMATIC S7-300 rack (S7-300 backplane bus)

Load voltage L+ / Rated value (DC)

120 V

Load voltage L1 / Rated value (AC)

230 V

Input current / from supply voltage L+, max.

250 mA

Input current / from backplane bus 5 V DC, max.

100 mA

Power loss, typ.

4.5 W

Number of digital outputs

16; Relays

Digital outputs / Short-circuit protection

No

Controlling a digital input

Yes

Digital outputs / Size of motor starters according to NEMA, max.

Size 5 according to NEMA

Switching capacity of the outputs / on lamp load, max.

50 W; 230 V AC

Output current / for signal "1" rated value

2 A

Output current / for signal "1" minimum load current

10 mA

Parallel switching of two outputs / for uprating

No

Parallel switching of two outputs / for redundant control of a load

Yes

Switching frequency / with resistive load, max.

1 Hz

Switching frequency / with inductive load, max.

0.5 Hz

Switching frequency / With inductive load (to IEC 60947-5-1, DC13/AC15), max.

0.5 Hz

Switching frequency / on lamp load, max.

1 Hz

Switching frequency / mechanical, max.

10 Hz

Total current of the outputs (per group) / horizontal installation / up to 60 °C, max.

8 A

Total current of the outputs (per group) / vertical installation / up to 40 °C, max.

8 A

Relay outputs / Rated supply voltage of relay coil L+ (DC)

24 V

Relay outputs / Contact connection (internal)

No

Relay outputs / Number of operating cycles, max.

100 000; 50 000 (24 V DC, at 2 A); 700 000 (120 V AC, at 2 A); 100 000 (230 V AC, at 2 A)

Relay outputs / Switching capacity of contacts / with inductive load, max.

2 A; 2 A (230 V AC), 2 A (24 V DC)

Technical documents (1)

• Siemens data sheet 6ES7322-1HH01-0AA0

Key features

• 16 relay outputs
• Rated output current 2 A
• Load voltage up to 230 V AC or 120 V DC
• Lamp load up to 50 W at 230 V AC
• 20-pin front connector
• Discontinued by Siemens on 1 October 2025; spare part only

About the Siemens 6ES7322-1HH01-0AA0

The Siemens 6ES7322-1HH01-0AA0 is the SM 322 relay output module with 16 isolated relay contacts. Siemens's data sheet gives a rated output current of 2 A, load voltages up to 230 V AC or 120 V DC, a lamp load of up to 50 W at 230 V AC, and a 20-pin front connector. Siemens's data sheet marks it as a spare part. Siemens names no direct successor for the order number; its route forward is migration to the S7-1500 with ET 200MP.

What is the 6ES7322-1HH01-0AA0 used for?

It switches loads that a 24 V transistor output cannot: 230 V AC coils, other voltage levels, and circuits that need galvanic separation from the PLC.

Lifecycle and successor

Discontinued: product cancellation (Siemens SiePortal), spare part only.

Before you order

What to photograph or confirm so the right unit is quoted.

Check the order number on the module. The front connector with the field wiring normally moves across to the replacement.