APPENDIX D — SPECIFICATIONS
pg. 91
Return to TOC Curtis Model 1226 – September 2019
APPENDIX D — SPECIFICATIONS
Voltage Ranges
Nominal
Battery
Voltage Brownout
Severe
Undervoltage Undervoltage Overvoltage
Severe
Overvoltage
24V 8V 9.6V 12V 30V 34V
36V 12V 14.4V 18V 45V 54V
36/48V 12V 14.4V 18V 60V 72V
PWM operating frequency 14.7 kHz
Electrical isolation to heatsink 500 VAC (minimum)
Package environmental rating Electronics sealed to IP54 per IEC 60529.
Storage ambient temperature range –40°C to 85°C
Operating ambient temperature range –40°C to 50°C
Weight 0.7 kg
Dimensions (W×L×H) 95 × 150 × 54 mm
EMC Designed to the requirements of EN12895:2015.
Safety Designed to the requirements of EN1175-1:1998+A1:2010 and EN (ISO) 13849-1.
UL UL 583 (pending)
Note: Regulatory compliance of the complete vehicle system with the controller installed is the responsibility of the vehicle OEM.
Table 35 Model Chart
Model Number
Battery Voltage
Drive Current 1
Minute
1
Drive Current 1
Hour (S2-60)
2
Boost Current
10 Seconds
Internal Relay
or Contactor
1226-2201 24V 130A 70A 150A Internal Relay
1226-3101 36V 90A 50A 110A Internal Relay
1226-5201 36V/48V 130A 50A 150A Contactor
1
1 minute current ratings are based on operating the controller on a non-thermally conductive bench, starting at an ambient temperature of 25°C with
no airow. The controller must operate for at least 1 minute before reaching thermal cutback at 75°C.
2
The S2-60 current ratings are based on mounting the controller on a 1/8 m
2
8 mm thick aluminum plate with 6 km/hour airow perpendicular to the
back side of the plate. The controller starts from an ambient temperature of 25°C for 1 hour.
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