Recom Switching Power Supply, RAC04-12DC/277-E, 12V dc, ±166mA, 4W, 1 Output, 80 → 305V ac Input Voltage

Bulk discount available

Subtotal 5 units (supplied in a tube)*

£84.50

(exc. VAT)

£101.40

(inc. VAT)

Add to Basket
Select or type quantity
Temporarily out of stock
  • Shipping from 16 April 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
5 - 9£16.90
10 - 24£16.38
25 - 49£15.84
50 +£15.34

*price indicative

Packaging Options:
RS Stock No.:
905-8758P
Mfr. Part No.:
RAC04-12DC/277-E
Brand:
Recom
Find similar products by selecting one or more attributes.
Select all

Brand

Recom

Output Voltage

12V dc

Output Current

±166mA

Power Rating

4W

Number of Outputs

1

Input Voltage

80 → 305V ac

Mounting Type

PCB Mount

Package Type

Encapsulated

Length

36.7mm

Width

27.2mm

Depth

17.1mm

Efficiency

78%

Series

RAC04-C/277

Maximum Temperature

+80°C

Minimum Temperature

-40°C

Weight

41g

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, 80 to 305V AC Supply Voltage, 36.7mm Length - RAC04-C/277 Series - RAC04-12DC/277-E


For quick energy changes, turn to this switching power supply from RECOM. It delivers DC voltage directly from an AC load with a hold-up time of just 15ms, so there's no hanging around. As the unit accepts voltages between 80 to 305V AC, it's a versatile component that's widely compatible. To keep your system energised and productive, the package is encapsulated package so electromagnetic interference is minimised. Installation is a quick fix thanks to straightforward PCB mounting.

• Broad operating temperature range between -40°C and +80°C makes it suitable for use in harsh environments
• 78% efficiency rating minimises energy wastage
• Light 41g weight doesn't add unnecessary load to your setup
• Built-in automatic recovery function restarts operations after short-circuiting for optimised performance
• UL 94 V-0 flammability-rated housing stops burning in 10 seconds in the event of a fire

Applications


• Industrial automation
• Process control
• Power supply services

What size is this unit?


This product has compact dimensions of 36.7 (L) x 27.2 (W) x 17.1mm (D), so it's an ideal choice in setups where space is at a premium.