Tdk lambda single output din rail mount power supply tdk lambda drb 50 12 1 the tdk lambda drb 50 12 1 is a din rail power supply operating at 12 15v 42a this power supply is ideal for low power applications that require a keenly priced basic functionality it has been designed to support the growing trend for simple and economic din power solutions in industrial building automation and process control applications the drb 50 12 1 combines low cost and extremely compact dimensions with in