BFC Specifactions

Durakool Relays & Contactors	T&C Industrial Controls
SERIES BFC (Open), BBC (Closed), 60 Amps
DESCRIPTION
The unusually long life of Durakool "B" size contactors in proportional temperature control systems has made them the most popular choice of designers of process heating controls.	BFC (normally open) and BBC (normally closed) contactors are general purpose, 60 Amp rated, featuring mercury to tungsten contacts. Tungsten's ability to resist arcing erosion greatly prolongs the life of the contactor. These relays can be used in plastic extrusion equipment to cycle heaters for precise temperature control.

PICTURES & DIMENSIONS

SPECIFICATIONS

Maximum Time Norm. Open: Operate 70 ms, Release 90 ms

Maximum Time Norm. Closed: Operate 120 ms, Release 90 ms

Contact Bounce, Release: None

Recommended DC Load Polarity: Top Connector Negative

Load Connectors: Pressure Connector

Coil Terminals: #6-32 Wire Binding Screw, Max #12 AWG Cu.

Breakdown Voltage, Min. Across Contacts: 5000 VRMS

DEFINITE PURPOSE MOTOR RATING, SERIES BFC

VAC

Breaking All Lines
FLA LRA

1 Phase 1 Pole
FLA LRA

240
480

26 156

14 80

- -

14 80

ELECTRICAL RATINGS

Volts

GENERAL PURPOSE

0.7/0.8 UL Power Factor

120 208 240 277 480 600

DC

1-48 120 240

Tungsten

Lamp / 60Hz

120

AC MOTOR LOAD

1 phase 3 phase

120 240 480 120 240 480

Series Contacts 60Hz Amps DC Amps Amps Kw Hp Hp Hp Hp Hp Hp

BFC N.O. 60 60 60 60 60 60 60 30 20 60 7.2 3.0 5.0 7.5 5.0 10 15

BBC N.C. 60 45 45 45 35 25 60 30 20 55 6.6 3.0 5.0 - 5.0 7.5 -

TYPICAL COIL DATA

NORMALLY OPEN NORMALLY CLOSED

Contacts Volts DC Ohms Watts Amps Part# DC Ohms Watts Amps Part#

1 Pole N.O. 24 40 2.60 0.235 BFC-716 40 2.8 0.229 BBC-701

120 902 3.47 0.055 BFC-717 902 3.5 0.055 BBC-702

208 3100 3.50 0.029 BFC-718 3100 3.4 0.029 BBC-703

240 3700 3.40 0.026 BFC-719 3700 2.9 0.024 BBC-704

277 5410 3.46 0.022 BFC-720 5410 3.4 0.020 BBC-705

480 15000 3.54 0.012 BFC-721 15000 3.6 0.010 BBC-706

12 (DC) 57 3.64 0.293 BFC-730 57 2.5 0.214 BBC-719

24 (DC) 230 3.48 0.146 BFC-722 230 2.4 0.099 BBC-707

2 Pole N.O. 24 15 5.20 0.515 BFC2-726 15 5.0 0.510 BBC2-309

120 350 7.46 0.133 BFC2-727 350 6.6 0.123 BBC2-305

208 960 7.39 0.076 BFC2-728 960 6.3 0.070 BBC2-310

240 1520 6.18 0.056 BFC2-729 1520 5.4 0.054 BBC2-306

277 2300 6.14 0.045 BFC2-730 2300 5.5 0.044 BBC2-311

480 5600 6.47 0.027 BFC2-731 5600 5.6 0.027 BBC2-312

12 (DC) 24 6.10 0.506 BFC2-7041 24 6.0 0.500 BBC2-313

24 (DC) 90 6.00 0.253 BFC2-733 90 6.0 0.250 BBC2-308

3 Pole N.O. 24 4.5 3.65 2.492 BFC3-707 5 10.2 1.170 BBC3-308

120 122 9.54 0.224 BFC3-708 135 8.8 0.208 BBC3-303

208 430 8.66 0.112 BFC3-709 480 8.6 0.108 BBC3-309

240 470 9.47 0.110 BFC3-710 520 8.6 0.104 BBC3-306

277 747 8.22 0.081 BFC3-711 830 7.8 0.077 BBC3-310

480 1900 10.12 0.055 BFC3-712 2100 9.4 0.050 BBC3-311

12 (DC) 11.5 10.10 0.866 BFC3-720 12.8 10.7 0.890 BBC3-312

24 (DC) 46 11.10 0.461 BFC3-721 51 11.3 0.470 BBC3-313

SPECIFICATIONS
Maximum Time Norm. Open:	Operate 70 ms, Release 90 ms
Maximum Time Norm. Closed:	Operate 120 ms, Release 90 ms
Contact Bounce, Release:	None
Recommended DC Load Polarity:	Top Connector Negative
Load Connectors:	Pressure Connector
Coil Terminals:	#6-32 Wire Binding Screw, Max #12 AWG Cu.
Breakdown Voltage, Min. Across Contacts:	5000 VRMS

		NORMALLY OPEN				NORMALLY CLOSED
Contacts	Volts	DC Ohms	Watts	Amps	Part#	DC Ohms	Watts	Amps	Part#
1 Pole N.O.	24	40	2.60	0.235	BFC-716	40	2.8	0.229	BBC-701
	120	902	3.47	0.055	BFC-717	902	3.5	0.055	BBC-702
	208	3100	3.50	0.029	BFC-718	3100	3.4	0.029	BBC-703
	240	3700	3.40	0.026	BFC-719	3700	2.9	0.024	BBC-704
	277	5410	3.46	0.022	BFC-720	5410	3.4	0.020	BBC-705
	480	15000	3.54	0.012	BFC-721	15000	3.6	0.010	BBC-706
	12 (DC)	57	3.64	0.293	BFC-730	57	2.5	0.214	BBC-719
	24 (DC)	230	3.48	0.146	BFC-722	230	2.4	0.099	BBC-707
2 Pole N.O.	24	15	5.20	0.515	BFC2-726	15	5.0	0.510	BBC2-309
	120	350	7.46	0.133	BFC2-727	350	6.6	0.123	BBC2-305
	208	960	7.39	0.076	BFC2-728	960	6.3	0.070	BBC2-310
	240	1520	6.18	0.056	BFC2-729	1520	5.4	0.054	BBC2-306
	277	2300	6.14	0.045	BFC2-730	2300	5.5	0.044	BBC2-311
	480	5600	6.47	0.027	BFC2-731	5600	5.6	0.027	BBC2-312
	12 (DC)	24	6.10	0.506	BFC2-7041	24	6.0	0.500	BBC2-313
	24 (DC)	90	6.00	0.253	BFC2-733	90	6.0	0.250	BBC2-308
3 Pole N.O.	24	4.5	3.65	2.492	BFC3-707	5	10.2	1.170	BBC3-308
	120	122	9.54	0.224	BFC3-708	135	8.8	0.208	BBC3-303
	208	430	8.66	0.112	BFC3-709	480	8.6	0.108	BBC3-309
	240	470	9.47	0.110	BFC3-710	520	8.6	0.104	BBC3-306
	277	747	8.22	0.081	BFC3-711	830	7.8	0.077	BBC3-310
	480	1900	10.12	0.055	BFC3-712	2100	9.4	0.050	BBC3-311
	12 (DC)	11.5	10.10	0.866	BFC3-720	12.8	10.7	0.890	BBC3-312
	24 (DC)	46	11.10	0.461	BFC3-721	51	11.3	0.470	BBC3-313