Power factor correction capacitors

The Eaton AutoVAR 300 is designed for low-voltage applications with a variable system load where maintaining a precise target power factor is required. With a heavy-duty, three-phase capacitor construction in a small, wall-mount footprint, this product is ideal for applications with little space to spare. TEST

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Overview Specifications Resources

Remotely control banks of contactor-connected capacitors

A door-mounted microprocessor controller with optional communication capabilities via a Modbus RS-485 (additional communication protocols supported via Eaton PXG900) allows users to remotely control the capacitors connected to the AutoVAR 300.

Easily meet power factor target values

The load is monitored so that the AutoVAR 300 can automatically bring individual capacitors in and out as required to meet the necessary power factor.

Specifications

AutoVAR 300 capacitor product specifications

Operating temperature	-20°C to +46°C
Storage temperature	-40°C to +55°C
Cabinet assembly certifications	UL 508A CSA C22.2 no 190
Capacitor certifications	UL 810

Wall-mounted AutoVAR 300 switched capacitor banks – low-voltage applications

Catalogue number	kVAR	Step x kVAR	Rated current amperes	Base delivery weight Lbs (kg)
240 V
25MCSR2313	25	5 x 5	60	217 (98.5)
50MCSR2313	50	5 x 10	120	255 (155.8)
75MCSR2313	75	5 x 15	180	260 (118.0)
100MCSR231	100	5 x 20	240	270 (122.6)
125MCSR231	125	5 x 25	300	292 (132.6)
480 V
50MCSR4313	50	5 x 10	60	200 (90.8)
75MCSR4313	75	5 x 15	90	210 (95.3)
100MCSR4313	100	5 x 20	120	210 (95.3)
125MCSR4313	125	5 x 25	150	240 (109.0)
150MCSR4313	150	5 x 30	180	240 (109.0)
175MCSR4313	175	5 x 35	210	260 (118.0)
200MCSR4313	200	5 x 40	241	270 (122.6)
225MCSR4313	225	5 x 45	270	290 (131.7)
250MCSR4313	250	5 x 50	300	292 (132.6)
600 V
50MCSR6313	50	5 x 10	48	200 (90.8)
75MCSR6313	75	5 x 15	72	210 (95.3)
100MCSR6313	100	5 x 20	96	210 (95.3)
125MCSR6313	125	5 x 25	120	240 (109.0)
150MCSR6313	150	5 x 30	144	240 (109.0)
175MCSR631	175	5 x 35	168	260 (118.0)
200MCSR631	200	5 x 40	192	270 (122.6)
225MCSR631	225	5 x 45	216	290 (131.7)
250MCSR631	250	5 x 50	240	292 (132.6)

Spare fuses

Fuse part number	240 Volts	480 Volts	600 Volts	Amperes
SP030217-0029J	5	10	10	30
SP030217-0037D	---	15	20	50
SP030217-0037E	10	20	---	60
SP030217-0037G	---	25	25–30	80
SP030217-0037J	15	30	40	100
SP030217-0037K	20	40	50	125
SP030217-0037L	25	50	---	150

Options

Description	Option code	Additional weight added
Remote alarm relay terminal block – relay terminal block for a remote alarm to indicate controller alarm status	A	1lb (0.4kg)
Communicating controller (Modbus RS-485)	C	1lb (0.4kg)
Hand-off-auto switch – provides manual control to connect or disconnect capacitor stages, regardless of controller output	H	5lbs (2.2kg)
Moulded case circuit breaker	M	50lbs (22.6kg) enclosure weight added plus circuit breaker weight
Weather-resistant enclosure (NEMA 3R gasketed)	W	10lbs (4.5kg)

AutoVAR 300 integrated main breakers

kVAR	AutoVAR rated current amperes	Breaker size (amperes)	Breaker interrupting rating (kA)	Breaker weight Lbs (kg)	Standard wire lug size
240 V
25	60	125	100	10 (4.5)	(1) #3–350
50	120	250	100	10 (4.5)	(1) #3–350
75	180	250	100	10 (4.5)	(1) #3–350
100	240	400	100	10 (4.5)	(2) #3/0–250
125	300	600	100	25 (11.4)	(2) #3/0–350
480 V
50	60	125	65	10 (4.5)	(1) #3–350)
75	90	125	65	10 (4.5)	(1) #3–350)
100	120	250	65	10 (4.5)	(1) #3–350)
125	150	250	65	10 (4.5)	(1) #3–350)
150	180	250	65	10 (4.5)	(1) #3–350)
175	210	400	65	10 (4.5)	(2) #3/0–250
200	240	400	65	10 (4.5)	(2) #3/0–250
225	270	400	65	10 (4.5)	(2) #3/0–250
250	300	600	65	25 (11.4)	(2) #3/0–350
600 V
50	48	125	35	10 (4.5)	(1) #3–350
75	72	125	35	10 (4.5)	(1) #3–350
100	96	250	35	10 (4.5)	(1) #3–350
125	120	250	35	10 (4.5)	(1) #3–350
150	144	250	35	10 (4.5)	(1) #3–350
175	168	250	35	10 (4.5)	(1) #3–350
200	192	400	35	10 (4.5)	(2) #3/0–350
225	216	400	35	10 (4.5)	(2) #3/0–350
250	240	400	35	10 (4.5)	(2) #3/0–350

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AutoVAR 300