Global Brake Heat Dissipation Curves show heat dissipation capability of models under continuous duty conditions. No "de-rating" or "service" factors need to be applied. Do not size a brake at a torque rating over its rated torque. CAUTION: This product contains rotating parts which could cause injury. At the time of installation, appropriate protective guards should be installed by the user according to the use of this product. Fan power requirements for GBA - GBD: 115 VAC, 0.19 amp, 230 VAC, 0.09 amp. Magnetic Particle Clutches & Brakes GBA GBB GBC 120 Magnetic Particle Clutches & Brakes