Recom Switching Power Supply, RAC04-12SC/277-E, 12V dc, 333mA, 4W, 1 Output, 80 → 305V ac Input Voltage

Bulk discount available

Subtotal (1 tube of 12 units)*

£222.86

(exc. VAT)

£267.43

(inc. VAT)

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  • Shipping from 22 April 2026
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Tube(s)
Per Tube
Per unit*
1 - 4£222.86£18.572
5 - 9£216.18£18.015
10 - 24£209.49£17.458
25 - 49£202.81£16.901
50 +£196.12£16.343

*price indicative

RS Stock No.:
166-6749
Mfr. Part No.:
RAC04-12SC/277-E
Brand:
Recom
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Brand

Recom

Output Voltage

12V dc

Output Current

333mA

Power Rating

4W

Number of Outputs

1

Input Voltage

80 → 305V ac

Mounting Type

Surface Mount

Package Type

Encapsulated

Length

36.7mm

Width

27.2mm

Depth

17.1mm

Efficiency

78%

Series

RAC04-C/277

Maximum Temperature

+80°C

Weight

41g

Minimum Temperature

-40°C

COO (Country of Origin):
TW

Recom 4W, PCB Mount, Encapsulated, Switch Mode Single and Dual AC-DC Converters - RAC04-C/277 Series


The RAC04-xxS_DC/277 series are fully certiἀed single and dual regulated AC/DC converters in an encapsulated PCB-mount package style with 3.75kVAC isolation and very low stand-by power consumption. The modules are suitable for worldwide use due to their wide input voltage range from 80VAC to 305VAC. Possible uses include home automation, standby applications and industrial controls.

50mW max. No Load Power Consumption
High Efἀciency up to 79%• Isolated Output 3.75kVAC / 1 min
SCP, OVP Protection
Wide Operating Temperature Range: -40°C to +80°C (only with sufἀx „-E“)
Universal Input 80-305VAC

RECOM Switching Power Supply, 78% Efficiency, Surface Mounting - RAC04-xxS_DC/277Series - RAC04-12SC/277-E


Need to step down input voltage to a steady output? You're in safe hands with this switching power supply from RECOM. It accepts input voltages between 80 and 305V AC, for universal use. A smooth 12V DC output keeps electronic devices running without a hitch. As the unit runs with 78% efficiency, it wastes little energy as heat so your system stays cool. At 36.7 (L) x 27.2 (W) x 17.1mm (D), this surface-mounting device is ideal for small setups.

Features & Benefits


• 4W power rating means it's suitable for low-energy applications
• Protected against short circuits and overloads to prevent system downtime
• Low 41g weight means it's ideal for portable devices
• Isolated output of 3.75kVAC for additional safety
• Reliable in a wide operating temperature range between -40°C and +80°C

Applications


• Industrial machine controls
• Consumer electronics
• Surveillance systems

How much electricity does this switching power supply use in standby mode?


As it has a low standby power consumption rate of 50mW maximum, you can be sure the unit isn't burning energy when it's not working.