Time current curves

Vintage or obsolete molded case circuit breakers

Select your product

MCCB E frame breaker
MCCB F frame breaker
MCCB G frame breaker
MCCB J frame breaker
MCCB K frame breaker
MCCB L frame breaker

MCCB M frame breaker
MCCB N frame breaker
MCCB P frame breaker
MCCB R frame breaker
MCCB, Tri-Pac current limiting breaker
SCB, Systems circuit breaker

MCCB, E frame breaker

AB DE-ION Circuit Breakers, All Frames - Time/Current Curves
(PDF 466 KB)
Type E 100 Amp AB De-ion: Circuit Breaker - Curve
(PDF 130 KB)
Type E 70-100 Amp 2-3 Pole - Curve
(PDF 135 KB)
Type EA 15-60 Amp 1 Pole
(PDF 137 KB)
Type EA 15-60 Amp 2-3 Pole - Curve
(PDF 200 KB)
Type EA 70-100 Amp 1 Pole - Time/Current Curve
(PDF 212 KB)
Type EA 70-100 Amp 2-3 Pole
(PDF 200 KB)
Type EH 15-60 Amp 1 Pole
(PDF 121 KB)
Type EH 70-100 Amp 1 Pole
(PDF 124 KB)
Type EH 70-100 Amp 2-3 Pole
(PDF 121 KB)
Westinghouse Panelboard and MCC Replacement Breaker Curves
(PDF 176 KB)

MCCB, F frame breaker

AB DE-ION Circuit Breakers, All Frames - Time/Current Curves
(PDF 466 KB)
Type F 15-40 Amp 2-3 Pole
(PDF 210 KB)
TYPE F 50-100 AMP 2-3 POLE
(PDF 200 KB)
Type FA 10-40Amp 2,3 and 4 Pole
(PDF 169 KB)
Type FA 125-150 AMP 2-4 Pole AB De-ion. Circuit Breaker - Curve
(PDF 170 KB)
Type FA 50-100 Amp 2, 3 and 4 Pole
(PDF 207 KB)
Type HF 15-40 Amp 2-3 Pole
(PDF 137 KB)
Type HF 50-100 Amp 2-3 Pole
(PDF 146 KB)
Type HFA 10-40 Amp 2-3 Pole
(PDF 169 KB)
Type HFA 50-100 Amp 2-3 Pole Curve
(PDF 175 KB)
Westinghouse Panelboard and MCC Replacement Breaker Curves
(PDF 176 KB)

MCCB, G frame breaker

AB DE-ION Circuit Breakers, All Frames - Time/Current Curves
(PDF 466 KB)
Type G 50-100 Amp 2-3 Pole
(PDF 129 KB)

MCCB, J frame breaker

AB DE-ION Circuit Breakers, All Frames - Time/Current Curves
(PDF 466 KB)
Type J 70-225 Amp 2-3 Pole
(PDF 150 KB)
Type J 70-225 Amp 2-3 Pole
(PDF 155 KB)

TC01203009E
Type JKL 20-225 Amp 2-3 Pole
(PDF 86 KB)
Type JKL Breaker and LA, LAB HLA 125-400 Amp 2-3 Pole
(PDF 86 KB)

TC01203011E

MCCB, K frame breaker

AB DE-ION Circuit Breakers, All Frames - Time/Current Curves
(PDF 466 KB)
Series C K-Frame Circuit Breaker with KS3400TA and KS3400TAG Seltronic Trip Units - Time Current Curves
(PDF 69 KB)
Series C K-Frame Circuit Breaker with Seltronic Trip Unit - Time Current Curves
(PDF 94 KB)
Series C K-Frame Circuit Breakers with Seltronic Trip Unit - Time Current Curve
(PDF 1 MB)
Series C KD, HKD with Type KS Seltronic Trip Unit - Time Current Curve
(PDF 68 KB)
Series C KD, HKD with Type KS Seltronic Trip Unit - Time Current Curves
(PDF 103 KB)
Series C KD/HKD/KDC Circuit Breakers with KS Seltronic Trip Units with Ground Fault - Time Current Curves
(PDF 72 KB)
Series C KD/HKD/KDC with KS Seltronic Trip Units with GF - Time Current Curves
(PDF 72 KB)
Series C KDC Circuit Breaker with Seltronic Trip Unit - Time Current Curve
(PDF 69 KB)
Type HKL 125-400 Amp 2-3 Pole
(PDF 155 KB)

TC01206002E
Type JKL Breaker and LA, LAB HLA 125-400 Amp 2-3 Pole
(PDF 86 KB)

TC01203011E
Type K 70-225 Amp 2-3 Pole
(PDF 196 KB)
Type Mark 75 HK 70-225 Amp 2-3 Pole
(PDF 138 KB)

MCCB, L frame breaker

AB DE-ION Circuit Breakers, All Frames - Time/Current Curves
(PDF 466 KB)
Series C L-Frame Circuit Breaker with LS Seltronic Trip Unit - Time Current Curves
(PDF 124 KB)
Series C L-Frame with LS Seltronic Trip Unit w/ Ground Fault - Time Current Curve
(PDF 104 KB)
Series C L-FrameCircuit Breakers with Seltronic Trip Units with Ground Fault - Time Current Curves
(PDF 72 KB)
Series C Type L-Frame Circuit Breaker with LS Seltronic Trip Unit - Time Current Curve
(PDF 300 KB)
Type HKL 125-400 Amp 2-3 Pole
(PDF 155 KB)
Type HLM 125-800 Amp 2-3 Pole
(PDF 142 KB)

TC01208005E
Type HLM 125-800 Amp 2-3 Pole
(PDF 137 KB)
Type JKL Breaker and LA, LAB HLA 125-400 Amp 2-3 Pole
(PDF 86 KB)

TC01203011E
Type L 125-600 Amp 2-3 Pole
(PDF 181 KB)

MCCB, M frame breaker

AB DE-ION Circuit Breakers, All Frames - Time/Current Curves
(PDF 466 KB)
Series C MD/S Circuit Breakers - Time Current Curves
(PDF 1 MB)

MCCB, N frame breaker

AB DE-ION Circuit Breakers, All Frames - Time/Current Curves
(PDF 466 KB)
Special Time/Current Characteristic Curves for Type NBDC Circuit Breakers
(PDF 91 KB)

MCCB, P frame breaker

AB DE-ION Circuit Breakers, All Frames - Time/Current Curves
(PDF 466 KB)
Type PA 1700-2000 Amp 2-3 Pole
(PDF 198 KB)
Type PA 600-1600 Amp 2-3 Pole
(PDF 187 KB)

MCCB, R frame breaker

MCCB, Tri-Pac Current limiting beaker

Time/Current Characteristic Curves for Type HLCLM400 Current Limiting Breaker
(PDF 135 KB)
Type FA TRI-PAC 15-100 Amp 2-3 Pole
(PDF 212 KB)
Type K TRI-PAC 70-225 Amp 2-3 Pole
(PDF 178 KB)
Type K TRI-PAC 70-225 Amp 2-3 Pole
(PDF 178 KB)

type k tri pac 70 225 amp 2 3 pole 29160921
Type KL TRI-PAC 124-400 Amp 2-3 Pole
(PDF 226 KB)
Type KL TRI-PAC 125-400 Amp 2-3 Pole
(PDF 231 KB)

TC01206003E
Type L TRI-PAC 125-600 Amp 2-3 Pole
(PDF 204 KB)

SCB, Systems circuit breaker

Type SCB-II (SPCB) 250-3000 Amp 3 Pole
(PDF 159 KB)

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