Apparatus and associated methods relate to providing safe electrical power to electrical equipment operating in a hazardous location. Safe electrical power is power that is both current limited and voltage limited so as to provide insufficient energy to ignite flammable gas or dust of a hazardous location. Safe electrical power is provided by first limiting voltage of operating power provided by a power source. Then the voltage-limited operating power is current limited by a current-limiting device. The current and voltage limited operating power is then converted to a step-down power via a current-limiting network. The step-down power is then voltage limited by a second voltage-limiting device. In some embodiments, the current-limiting network is a current mode step-down regulator.
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