Product DescriptionCutler Hammer MDN840 Insulated Case Circuit Breaker. Family Magnum DS; Type MDN; 3 Pole; 3 Phase; 4000 Amp; 85kA@508V AIC; Bolt-On Mounting.
Eaton's Magnum DS Low Voltage Power Circuit Breakers offer the highest ANSI interrupting and withstand ratings in the industry in the smallest physical size and are the most easily maintained ANSI breakers on the market. Magnum SB are insulated-case power circuit breakers designed for the performance and economic requirements of UL 891. Both are ideal for switchgear and switchboards, providing excellent safety, flexibility, and a high level of performance. Magnum breakers for IEC and DC applications are also available.
All our reconditioned circuit breakers and repairs conform to NETA, UL 1066, UL 489, and ANSI C37 specifications. In addition, all tolerances are checked to meet or exceed the original manufacturer’s specifications. We offer the following services for this Cutler Hammer MDN840 depending on your specific requirements:
Repairs and Retrofitting
Full Service and Repair Shop, PEARL Certified Technicians, Fast Turnaround, FREE Estimates!
Shunt trips, Aux Contacts, UVRs for all brands and models. Power breaker replacement mechs, contacts, primary disconnects, arc chutes, trip units and current sensors.
Rebuild & Reconditioning
Our Class 1 Rebuild process includes replating operating mech and current carrying parts. Powder coating frames and upgrading trip units to the latest models available. The end result is a breaker that looks and performs the same as a factory new unit.
Testing & Calibration
Primary injection testing, contact resistance, and insulation resistance testing. Circuit breakers are tested and certified to their original factory specifications which exceed NETA field testing requirements.
24HR. Emergency Service
We ship large items over night every day and we can do it at a surprisingly low cost! When you absolutely have to get the power back up call us, day or night.
Quality Switchgear warranties this reconditioned Cutler Hammer MDN840 for one year, including all labor, freight and materials required to return it to operational standards. Quality Switchgear guarantees this product will operate to your satisfaction under normal load and usage conditions. Any repairs performed without the express written permission of Quality Switchgear Inc. shall invalidate this warranty. Quality Switchgear shall not be liable to the customer, or to any other person, for consequential damages, lost profits or other kinds of damages arising out of the sale or use of this circuit breaker.