70 Circuit Breakers www. factorymation. com

now high-quality Miniature C ircuitB reakers to fit your supplementary protection needs.T he NB 1 S eries of MC B s are UL1077 recognizedand can be trusted to provide overcurrent protection foryour automation control devices and components.T he NB 1 MC B features include:

• UL 1077, CSA, VDE, CE• Current ratings up to 63A• Maximum 480VAC (multi-pole), 277VAC (single-pole)• DC Voltage ratings for B-curve models• B trip curves models available for general use and DC applications• D trip curve models available for high starting current applications such

as motor starting• 5000 A Interrupt Rating• DIN rail mount chassis• Captive terminal screws won’t fall out

MINIATURE CIRCUIT BREAKERS

F ile: E 218757

70 Circuit Breakers www. factorymation. com

B&B ow o�ers CHINT high-quality Miniature C ircuitB reakers to fit your supplementary protection needs.T he NB 1 S eries of MC B s are UL1077 recognizedand can be trusted to provide overcurrent protection foryour automation control devices and components.T he NB 1 MC B features include:

• UL 1077, CSA, VDE, CE• Current ratings up to 63A• Maximum 480VAC (multi-pole), 277VAC (single-pole)• DC Voltage ratings for B-curve models• B trip curves models available for general use and DC applications• D trip curve models available for high starting current applications such

as motor starting• 5000 A Interrupt Rating• DIN rail mount chassis• Captive terminal screws won’t fall out

MINIATURE CIRCUIT BREAKERS

F ile: E 218757

N B1 A AC- -

V alid C urren t R a tings1 -46

1016202532405063

C = C urve : “B ” o r “D ” P = P o les: “1 ”, “2 ” o r “ 3 ”

A A = 2 D ig it A m perage

Agency Approvals UL 1077, C S A; S tandard: IE C 60898, C V, E S C , F IMKO, K E MA,S E MKO, V DE , UK R E S T, P C T, R C C

Maximum Voltage S ingle pole: 277VAC , 110V DC (DC Voltage for B curve only);Multi-pole: 480VAC , 125V DC (DC Voltage for B curve only)

Maximum Interupt R ating 5k VAC , 10k V DC (DC Voltage for B curve only)

L ifes pan Mechanical: 10,000 operations ; E lectrical (Ie max.): 4000 operations

Switching R ate Mechanical: 240 ops/hr; E lectrical: 240 ops/hr (1-32A), 120 ops/hr (40-63A)

Ambient Temperature Operating: -5 to +40°C (23 to +104°F )

Degree of protection IP 20

Max Power Cons umption 2W (1-10A), 3.5W (16-32A), 5W (40-63A)

Terminal Capac ity 1.0 to 16mm2 (17 to 6 AWG )

T ightening Torque 2.0 N.m

General Specifications

International Headquarters: 815-433-5100 Fax 433-5104 www.bb-elec.com European Headquarters: +353 91 792444 Fax +353 91 792445 www.bb-europe.com

# P

Example Part Number:NB1-B10-2P

71Circuit Breakers1.800.972.0436

AC operation B curve

t(s)

100005000

1h20001000

500200100

502010

521

0.50.20.1

0.050.020.01

0.0050.0020.001 0.5 1 2 3 4 5 7 10 20 30 5070100 200 I/In

10 00 050 00

1h20 0010 00

50 020 010 0

502010

521

0.50.20.1

0.050.020.01

0.00 50.00 20.00 1 0.5 1 2 3 4 5 7 10 20 30 50 7010 020 0 I/In14

t(s)

AC operation D curve

2 2Let- th ro u gh I t/AS

6 3 A5 0 A3 2 A2 5 A2 0 A1 6 A1 0 A

6A

4A

3A

2A

1A

4 0 A

510

5

410

5

310

210 5 310 5 410Sho rt-ci rcut curr ent ip/A

2I t

10 00 050 00

1h20 0010 00

50 020 010 0

502010

521

0.50.20.1

0.050.020.01

0.00 50.00 20.00 1 0.5 1 2 3 4 5 7 10 20 30 50 7010 020 0 I/In14

t(s)

DC operation B curve

77 (3.03”)

49.5 (1.95 ”)

45(1.77”)

35(1 .38” )

86(3.39”)

18(0.71 ”)

36(1.4 2”)

54(2.1 3”)

NB1 Dimensions

NB1 Characteristic Curves

Temperature -10°C 0°C 10°C 20°C 30°C 40°C 50°C 55°C 60°C

Compens ation Coeffic ient 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.875 0.85

International Headquarters: 815-433-5100 Fax 433-5104 www.bb-elec.com European Headquarters: +353 91 792444 Fax +353 91 792445 www.bb-europe.com