The Vanguard MCCB-250 is a programmable, high-current source designed specifically for testing molded-case circuit breakers, thermal magnetic and solid-state overload motor-protection relays.

• 4 current-source outputs (i.e., 5 A @ 120 Vac, 25 A @ 24 Vac, 120 A @ 6 Vac, 250 A @ 3 Vac)
• 4-line by 20-character LCD display
• Provides external current input (0-10 A)

MCCB-250	Cables
Cable Part Number [8000-0016] Power + Ground Combination Cable 8000-0016 [8000-0086] 10' (3.05m) Current Cable Set (#4 AWG) 8000-0086 [8000-0089] 10' (3.05m) Current Cable (#10 AWG) 8000-0089 [8000-0090] Timer + Sense Cable Set [ 10' (3.05m) ] 8000-0090

MCCB-250	Technical Specifications
TYPE 250 Ampere current source PHYSICAL SPECIFICATIONS 16.8”W x 12.6”H x 10.6”D (42.6 cm x 32.0 cm x 27.0 cm); Weight: 46 lbs (21 kg) INPUT POWER 100 – 120 Vac or 200 – 240 Vac (factory pre-set), 50/60 Hz OUTPUT CURRENTS 0 – 5 A @ 120 Vac max; 0 – 25 A @ 24 Vac max; 0 – 120 A @ 6 Vac max; 0 – 250 A @ 3 Vac max; Instantaneous current: 700A INTERNAL CURRENT METER 100 mA – 1000 A; Accuracy: 1% of reading ±20mA MEASUREMENT METHOD Isolated CT EXTERNAL METER RANGE 10 mA – 10 A; Accuracy: 1% of reading, ±2mA MEASUREMENT METHOD Isolated CT TIMER READING RANGE 1ms – 2 hours; Accuracy: 0.1% of reading ±1ms TIMER STOP INPUTS Voltage input (24V – 300V, DC or peak AC), dry contact input, or removal of primary current DISPLAY Back-lit LCD Screen (20 characters by 4 lines); viewable in bright sunlight and low-light levels COMPUTER INTERFACE RS-232C port for factory calibration and diagnostics SAFETY Designed to meet IEC61010 (1995), UL61010A-1, CSA-C22.2 standards ENVIRONMENT Operating: -10?C to 50? C (15?F to +122? F); Storage: -30? C to 70? C (-22?F to +158? F) CABLES Power cord, ground cable, 10-foot #2 AWG test leads OPTIONS Transportation case WARRANTY One year on parts and labor Specifications are valid at nominal voltage and ambient temperature of +25?C (+77?F).