MTH 40-4000 - Z-4000 Transformer
MTH 40-4000 - Z-4000 Transformer
MTH 40-4000 - Z-4000 Transformer

MTH 40-4000 - Z-4000 Transformer

SKU: 40-4000
$ 649.95
Taxes and shipping calculated at checkout

Product Information

Announced Date: March 1998
Re-Released Date: Aug 2022
Individually Boxed: Yes
  • Product #: 40-4000
  • Product Line: DCS
  • Scale: O Scale
  • Release: Mar. 1998


  • 400 Watts
  • (1) 14v 3amp fixed output
  • (1) 10v 3 amp fixed output
  • (2) 180 Watt Track outputs
  • U.L. Listed to U.S. & Canadian Standards
  • Pure Sine Wave Power Signal
  • (2) 21 Volt Variable Track Outputs
  • (1) 14 Volt Fixed Output
  • (1) 10 Volt Fixed Output
  • Internal Cooling Fan
  • On/Off Power Switch
  • Power and Overload Indicator Lights
  • Compatible As A Power Source For All O Gauge AC-Powered Locomotives & Accessories
  • Circuit Breaker Protection For Each Output
  • Voltage LED Displays
  • Amperage LED Displays
  • Unit Measures:8 3/4" x 14 3/4" x 11 1/8"

Conventional or Command Control operators have chosen the Z-4000 transformer as their go-to transformer for nearly 20 years. The industry's most powerful UL listed transformer, the Z-4000 delivers 400 watts of continuous power at about a $1.00 per watt. There simply is no better, affordable power supply for AC model railroads than the M.T.H. Z-4000.

Equipped with two smooth-operating, wide-range 10amp throttles to let you power two different tracks, the Z-4000 lays down up to 22 volts AC onto each track it controls. Bright LED displays monitor voltage and amperage outputs for each channel while the fast-acting resettable circuit breakers protect your trains and accessories from damaging voltage spikes. A built-in cooling fan keeps the unit's internal circuits running at max capacity for hours of continous operation making the Z-4000 a great choice for club layouts, public displays and home layouts alike. Two separate accessory outputs are included making it easy to provide 10 - 14 volt continous AC output for trackside accessories, switches, lighting and more.

Conventional operators will love the built-in Proto-Sound programming features allowing operators to access original Proto-Sound locomotive functions without bell and whistle button sequencing. The built-in powerup features of the Z-4000 prevent an accidental power push to the layout. No more accidental train startups!

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