150-C251NCR

Name: 150-C251NCR
Brand: ROCKWELL
SKU: 150-C251NCR

The Allen Bradley 150-C251NCR is a versatile smart motor controller ideal for industrial environments. It features a soft starter with integral bypass, overload protection, and motor diagnostics. The controller supports 4 modes of operation and includes an LED display for fault indication.

Product Model150-C251NCR

Product ID107475

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Advanced Soft Starting FeaturesThe Allen Bradley 150-C251NCR offers four modes of operation: Soft Start, Current Limit Start, Kick Start, and Soft Stop, ensuring smooth and controlled motor startup and shutdown.
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2. Enhanced Safety FeaturesEquipped with an integral bypass and overload protection, this controller ensures the motor and its components are safeguarded against overloads and short circuits.
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3. Comprehensive DiagnosticsThe controller includes an LED display that indicates various faults such as overload, overtemperature, phase reversal, phase loss/open load, phase imbalance, short circuit, and test status.
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4. Versatile CompatibilityCompatible with delta connections and designed for use in industrial environments with a pollution level no higher than Pollution 2 (as defined in the EN / IEC0664-1 publication), making it suitable for a wide range of applications.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Product Family

SMC-3

With display

Voltage type for actuating

AC/DC

Rated operating voltage Ue

200

Rated control supply voltage at AC 50 Hz

24 V

Rated control supply voltage at AC 60 Hz

24 V

5. Reliable PerformanceThe 150-C251NCR has an ESD immunity of 6 kV for contact discharges and 8 kV for air discharges, ensuring reliable performance in harsh industrial environments.

Overload current

84 A

Controller type

SMC-3

DV/DT protection

1000V/Î¼s for power circuit

Repetitive peak voltage

1600V per UL/CSA/NEMA for power circuit

Operating frequency

50/60 Hz per UL/CSA/NEMA for power circuit

Line connected motor power, max

90...160 kW @ 500V AC @ 50Hz, 3-phase

Delta connected motor power, max

315 kW @ 500V AC @ 50Hz, 3-phase

Overvoltage category

III per IEC for side mount auxiliary contacts

Rated impulse voltage

6 kV for power circuit

Dielectric withstand

2500V AC per IEC for power circuit

Line connected motor current

84...251A @ 500/575V AC, 3-phase

Delta connected motor current

145...435A @ 500/575V AC, 3-phase

Insulation voltage

Rated 600V AC per UL/CSA/NEMA for power circuit

Rated operational voltage

250V AC/30V DC per UL/CSA/NEMA for Side mount auxiliary contacts

Rated control power during start with fan

200mA @ 120V AC/120mA @ 240V AC, 600mA @ 24V AC/DC

Input OFF-state current

<10 mA, <12 mA @ input off-state voltage (IN1, IN2) for control circuit

Short-circuit protection device list

Non-time delay Thermal magnetic circuit breaker High capacity time delay class CC/J/L

Number of contacts

TB-97, -98 (OVLD/Fault): 1 for auxiliary contacts

High capacity available fault current, max

70kA @ 600V, maximum current 800 A time delay Class J or Class L fuse for inside delta connected motors

Type of current

TB-97, -98 (OVLD/Fault): AC/DC for auxiliary contacts

Conventional thermal current (Ith)

TB-97, -98 (OVLD/Fault): 1 A for auxiliary contacts

Type of control circuit

TB-97, -98 (OVLD/Fault): Electromagnetic relay for auxiliary contacts

Type of contacts

TB-97, -98 (OVLD/Fault): Normally Open (N.O.) for auxiliary contacts

Utilization category

TB-23, -24 (normal/up-to-speed), TB-33, -34 (normal/up-to-speed): C300/R150 per UL/CSA/NEMA for Side mount auxiliary contacts

Rated operational current, max

TB-97, -98 (OVLD/Fault): 0.6A @ 120V AC and 0.3A @ 240V AC for auxiliary contacts

Standard controller feature

Soft stop

Standard available fault current, max

18 kA @ maximum standard fuse 700 A for line device opsal current rating

Rated control supply voltage at DC

24 V

Integrated motor overload protection

Yes

Short circuit protection device performance (SCPD) type

Type 1

Selectable overload trip class

Trip Class 10, 15, or 20

Selectable start times

2, 5, 10, 15, 20, 25, or 30 s

Input OFF-state voltage (IN1, IN2), max

40V AC @ 17V DC/12V AC for control circuit

Selectable current limit

150%, 250%, 350%, and 450% of full load current

Input ON-state voltage, during start (IN1, IN2)

85V AC @ 19.2V DC/19.2V AC minimum for control circuit

Input ON-state current (IN1, IN2)

9.8mA @ 120V AC/19.6mA @ 240V AC for control circuit, 7.3mA @ 24V AC/DC for control circuit

Degree of protection (IP)

IP2X

Weight

30.132

Shock

Opsal: 15 G

Width

225 mm (8.86 in)

Depth

265.3 mm (10.45 in)

Height

560 mm (22.05 in)

Cable size

0.2...2.5 mm2 (24...14 AWG) for control terminals

Vibration

Opsal: 1.0 G peak, 0.15 mm (0.006 in) displacement

Make

TB-97, -98 (OVLD/Fault): 432VA for auxiliary contacts

Break

TB-97, -98 (OVLD/Fault): 72VA for auxiliary contacts

Tightening torque

0.45...0.9 Nm (4.0...8.0 in-lb) for control terminals

Internal bypass

Yes

Function

Single direction

Selectable kick start - 450% FLA

0, 0.5, 1.0, or 1.5 s

Selectable initial torque

15%, 25%, 35%, and 65% of locked rotor torque

Selectable soft stop

Off, 100%, 200%, or 300% of the start time setting when wired

Steady state heat dissipation

147 W

Storage and transportation temperature

-25 Â°C

Rated surrounding temperature range without derating

-5 Â°C

Humidity

5...95% noncondensing

Operating temperature

Open: -5 to 50 Â°C (23 to 122 Â°F)

EMC emission levels

Radiated emission: Class A per IEC

EMC immunity levels

Surge transient: per EN/IEC 60947-4-2 per IEC

Altitude

2000 m

Pollution degree

Mounting hole size

11.5 mm

Number of poles

Equipment is designed for 3-phase only for power circuit

Power pole holes

Two M10 x 1.5 diam holes per power pole for load power terminals

Enclosure

Open type

Repairable

REPAIRABLE

Preferred Availability

false

Quick Turnaround

false

Dimension Height

33.604

Lead Time

Dimension Width

30.81

Dimension Length

63.805

Stock Status

NON_STOCKED

Weight Unit

Dimension Unit