Overview

PS9421-4840-0000 | Redundancy module 24–56 V, 40 A

Overview 1:

  • For N+1 and 1+1 redundant systems
  • Dual input with single output
  • Only 60 mV voltage drop with 20 A output current
  • Only 1.8 W loss with 20 A and 5.4 W with 40 A output current
  • 160% (65 A) peak load capability
  • Protection against reverse input polarity
  • Full power between -40 °C and +60 °C
  • Width only 46 mm
  • Robust metal housing

The PS9421-4840-0000 is a redundancy module that can be used to set up 1+1 and N+1 redundant systems. It has two input channels, to which power supplies with output currents of up to 20 A can be connected, and one output that can carry nominal currents of up to 40 A. The module is suitable for power supplies with a constant current overload behavior as well as for any type of intermittent overload behavior.

The redundancy module uses MOSFET technology instead of diodes for decoupling the two input channels. This reduces the heat development and the voltage drop between input and output.

Due to the low power loss, the device is very narrow and requires a width of just 46 mm on the DIN rail. Large connection terminals enable secure and fast installation. The redundancy module requires no additional auxiliary voltage. Due to the international approvals package, the device is suitable for virtually every application.

Overview of technical data *)

Overview of technical data

PS9421-4840-0000

Input voltage

DC 24-56 V (±15 %)

Input voltage range

20.4-64.4Vdc

Input current

2x 20 A, below +60 °C ambient temperature

2x 15 A, at +70 °C ambient temperature

2x 32.5 A, up to 5 s

Output current

40 A, below +60 °C ambient temperature

30 A, at +70 °C ambient temperature

65 A, up to 5 s

Maximum output current below 6 Vdc

45 A rms, in every overload or short-circuit state

Voltage drop between input and output

60 mV, with 2x 10 A input

120 mV, with 2x 20 A input

Power loss

0.62 W, with no load

1.8 W, with 2x 10 A input

5.4 W, with 2x 20 A input

Temperature range

-40 °C to +70 °C in operation

Dimensions (W x H x D)

46 x 124 x 127 mm, without DIN rail

Weight

360 g

*) All values typical with 48 Vdc input voltage, 40 A output current, 25 °C ambient temperature and after a running-in time of 5 minutes, unless specified otherwise.