Detailed Product Description JM B ,B JZ ,D G ,B Z Series illumination transformers: JMB, BJZ, DG, BZ Series Illumination ... , voltage 500V and below the circuit, machine tools and other equipment as a partial power lights. JMB, BJZ, DG, series transforme ... the protection of lighting circ uits, power supply from the equipment Have the main switch so that one end of the ...