Siemens 6ES5456-4UA12 SIMATIC S5 16-Channel AC Digital Output Module

Product Overview

The Siemens 6ES5456-4UA12 is a SIMATIC S5 digital output module for switching AC field loads. It provides 16 outputs arranged in two galvanically isolated groups of eight, allowing an S5 controller to manage multiple discrete devices from one module. Siemens specifies a rated 115/230 V AC supply and a 2 A output rating. The module’s grouped outputs make it suited to control circuits that need several independent on/off signals. 

Technical Specifications

Key Features & Model Benefits

- 16 AC outputs: Handles multiple discrete control signals in one module.
- Two isolated groups: Separates the outputs into groups of eight.
- 115/230 V AC rating: Supports common industrial AC control circuits.
- Fuse-protected output groups: Four 6.3 A fuses protect the module’s four-output groups. 

Frequently Asked Questions

Q: What type of module is the 6ES5456-4UA12?
A: It is a Siemens SIMATIC S5 digital output module for AC loads.
Q: How many outputs does the 6ES5456-4UA12 provide?
A: It provides 16 outputs, isolated in two groups of eight.
Q: What is the rated supply voltage of the 6ES5456-4UA12?
A: The rated supply voltage is 115/230 V AC at 47–63 Hz.
Q: What is the output current rating of the 6ES5456-4UA12?
A: Siemens lists 2 A per output. The permissible total load depends on operating conditions, so the rating should not be read as 16 outputs each carrying 2 A simultaneously. 

Industries Served

• Manufacturing — Discrete AC control in production lines and machinery.
• Power Generation — On/off control signals for auxiliary plant equipment.
• Chemical Processing — AC output control within automated process systems.
• Water Treatment — Switching duties in pump and treatment-control systems.