3PS477.9

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The 3PS477.9 is a 2005 power supply module designed for 24 VDC applications, featuring an expansion slave interface and a maximum output power of 58.5 W. Manufactured by B & R Automation, it belongs to the System 2005 Controllers and includes short circuit protection with a 6.3 A time lag fuse.

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Product Description:

The 3PS477.9 is one of the modules in the series of B&R Automation System 2005. It is appropriate for applications based on 24 VDC and is ideal to be used with industrial systems in need of continuous, reliable power. The range of input voltages for this module is from 18 VDC to 30 VDC, which renders it compatible with a wide variety of power supplies.

It provides two power outputs of 5V up to 40 W and 24V up to 50 W and offers a range of power sources based on the varying needs of the system. The total maximum output power is 58.5 W, and this ensures the system to support power-hungry components. The maximum current requirement of the module is 3.5 A, and this allows it to deliver high-demand applications. The module also provides an input capacitance of 500 µF with voltage regulation that is stable. It also provides external backup capacitor support to guarantee that it continues to function. A single-phase system requires 10,000 µF and three-phase systems require 6,000 µF to guarantee stability in the event of power failure. The module is protected with a 250 V-rated, 6.3 A time lag fuse to protect it against overloads and short circuits and ensure that the life of the system is retained.

The 3PS477.9 incorporates an expansion slave interface, through which multiple additional segments can be easily added and extended as far as one likes the system to grow. Two slots are required in the backplane where the module needs to be installed and occupy in the leftmost slot. It is a double-width 2005 B&R module, designed with a high-performance yet space-efficient solution. The 3PS477.9 has simple, easy installation and long-term reliability, perfect for use in many applications for industrial power management.

Backup Capacitor (single-phase)
10,000 µF
Backup Capacitor (three-phase)
6,000 µF
Current Draw
Max 3.5 A
Expansion Interface
Slave interface for additional I/O segments
Input Capacitance
500 µF
Input Voltage Range
18–30 VDC (nominal 24 VDC)
Installation Position
Far-left backplane slot, occupies two slots
Module Dimensions
Double-width B&R 2005 module
Output Power
5 V: 40 W; 24 V: 50 W; Total: 58.5 W
Short-Circuit Protection
6.3 A time-lag fuse (250 V)

Frequently Asked Questions about 3PS477.9:

Q: What is the input voltage range of model 3PS477.9?

A: The input voltage ranges from 18 VDC to 30 VDC.

Q: What are the output power specs for 3PS477.9?

A: It provides 5V at 40 W and 24V at 50 W, with max 58.5 W total.

Q: What is the required external backup capacitor for 3PS477.9?

A: 10,000 µF for single-phase and 6,000 µF for three-phase.

Q: What type of fuse protects model 3PS477.9?

A: It uses a 6.3 A time lag fuse rated at 250 V.

Q: How many slots does 3PS477.9 occupy?

A: Model 3PS477.9 occupies two slots on the backplane.


Internal Product Review

  • ‘‘The 3PS477.9 power module from B & R Automation has proven reliable in every deployment. Installation is simple, and once running, it holds steady under load. B & R Automation built this with excellent protection features, and it shows. We’ve had zero failures or concerns with this unit in place.’’

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