Molded Case Circuit Breaker Tester
Molded Case Circuit Breaker Tester

Molded Case Circuit Breaker Tester

Universal Power Supply Portable AC/DC - UPS S3 Universal Power Supply Portable AC/DC – UPS S3
Molded Case Circuit Breaker Tester Molded Case Circuit Breaker Tester

$6,140.91

Manufacturer: Vanguard Instrument

Model: MCCB-250

P/N: 9066-UC(110V)/9067-UC(220V)

SKU: AMA-5127-31
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Description

Molded Case Circuit Breaker Tester

Molded Case Circuit Breaker Tester

Description of Molded Case Circuit Breaker Tester

Molded Case Circuit Breaker Tester with four current-source outputs(5 A @ 120 VAC, 25 A @ 24 VAC, 120 A @ 6 VAC, 250 A @ 3 VAC)

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

Built-in Timer

The MCCB-250’s built-in timer can test the time-delay characteristics of protection relays and molded-case circuit breakers. Once the test is initiated, the current source and the timer are automatically turned on at the next zero-crossing point of the AC. The timer stops when the MCCB-250 input detects a change in the dry contact or voltage input, or detects the removal of the test current. The test results are then displayed in mil­liseconds and fractions of cycle(s) on the unit’s back-lit LCD screen (20 characters by 4 lines).

Current Source

The MCCB-250 has 4 current-source outputs (5 A @ 120 Vac, 25 A @ 24 Vac, 120 A @ 6 Vac, 250 A @ 3 Vac) that conduct the test current through the high-impedance load circuits. Each current source can tolerate short duration over-loads (see table below). This feature is used for testing the instantaneous trip element of mold­ed-case circuit breakers. When using this feature, the selected test current is displayed on the LCD screen. When the MCCB-250 is used as a current source, the current-flow time (the current-on period) is displayed on the LCD screen.

External Current Input

The MCCB-250 also provides an external current input (0 – 10 A). Both internal and external current source readings can be viewed at the same time.

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).

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