Claire
Mr.Fu
Claire
China SJKCPS Control and Protective Switching Device - Reliable Supplier and Factory for Motor Control Solutions
Type Designation
| No. | Description |
| 1 | Control and Protection Switching Device |
| 2 | Main Frame Current Rating (45, 125) |
| 3 | Breaking Capacity Code: C-Economic Type; Y-Standard Type; H-High Type |
| 4 | Load Type (Motor M / Power Distribution P) |
| 5 | Rated Current (1A ~ 125A) |
| 6 | Accessories (02, 06, 09) (unmarked if not present) |
| 7 | Coil Control Voltage (M: AC230V; Q: AC400V) |
| 8 | Basic Type (unmarked); F-Fire Protection Type (alarm only, no tripping) |
| 9 | G-Isolated Type (unmarked if not present) |
Product Display
Technical Parameters
| Frame Current Ith (A) | Main Rated Current In (A) | Overload Electronic Trip Rated Current Ie (A) | Overload Electronic Trip Current Adjustment Range | 380V Control Power Range (kW) | Utilization Category | Rated Voltage (V) | Rated Frequency (Hz) |
| 45 | SJKCPS-16 | 1 | 0.4~1 | 0.12~0.33 | AC-42 AC-43 AC-44 |
380(400) | 50(60) |
| 3 | 1.2~3 | 0.5~1.5 | |||||
| 6 | 2.4~6 | 1.5~3 | |||||
| 10 | 4~10 | 2.5~5 | |||||
| 16 | 6.4~16 | 4.5~7.5 | |||||
| SJKCPS-32 | 25 | 10~25 | 5.5~11 | ||||
| 32 | 13~32 | 11~15 | |||||
| SJKCPS-45 | 45 | 18~45 | 15~22 | ||||
| 125 | SJKCPS-63 | 63 | 25~63 | 18.5~30 | |||
| SJKCPS-80 | 80 | 32~80 | 30~37 | ||||
| SJKCPS-100 | 100 | 40~100 | 37~45 | ||||
| SJKCPS-125 | 125 | 50~125 | 40~55 |
Motor Protection Curve & Power Distribution Protection Curve
Motor Protection Curve
Power Distribution Protection Curve
Product Utilization Categories and Typical Applications
| Circuit | Utilization Category | Typical Applications |
| Main Circuit | AC-20A | Connecting and disconnecting circuits without conditions |
| AC-40 | Power distribution circuits, including mixed resistive and inductive loads with reactors | |
| AC-41 | Non-inductive or slightly inductive loads, resistance furnaces | |
| AC-42 | Slip-ring motors: starting, breaking | |
| AC-43 | Squirrel-cage induction motors: starting, breaking during operation | |
| AC-44 | Squirrel-cage induction motors: starting, plugging/reversing, jogging | |
| AC-45a | Switching discharge lamps | |
| AC-45b | Switching incandescent lamps | |
| Circuit | Utilization Category | Typical Applications |
| Auxiliary Circuit | AC-15 | Controlling AC electromagnetic loads |
| AC-20A | Connecting and disconnecting circuits without conditions | |
| AC-21A | Switching resistive loads, including appropriate overloads | |
| DC-13 | Controlling DC electromagnetic loads | |
| DC-20A | Connecting and disconnecting circuits without conditions | |
| DC-21A | Switching resistive loads, including appropriate overloads |
Basic Model Operation Panel Diagram and Installation Dimensions
1. Control (Automatic or Manual) Position:
In this state, the internal control coil contact of the SJKCPS switchgear is in the closed position, controlling the circuit connection and disconnection through the coil control circuit. This state allows for remote automatic control.
2. Free Release Position:
The position where both main contacts and electromagnetic coil control contacts are disconnected when corresponding functional modules operate due to faults such as overload, short circuit, phase loss, over/under voltage in a closed circuit.
3. Disconnection Position:
The coil contact is in the disconnected position, and the SJKCPS main contact is also in the disconnected position.
4. Re-engagement Position:
The SJKCPS switchgear can only be freely released when the operating knob is turned to this position, allowing for normal resetting and re-engagement.
Frequently Asked Questions (FAQ)
Q1: What is the main function of the SJKCPS Control and Protection Switching Device?
The SJKCPS is an integrated device that combines motor protection, contactor, and circuit breaker functions into one unit. It provides overload protection, short circuit protection, phase loss protection, and under/over voltage protection, enabling both manual and remote automatic control of electrical circuits.
Q2: What current ratings are available for the SJKCPS series?
The SJKCPS series covers a wide range of rated currents from 1A to 125A, with main frame current ratings of 45A and 125A. Models include SJKCPS-16, SJKCPS-32, SJKCPS-45, SJKCPS-63, SJKCPS-80, SJKCPS-100, and SJKCPS-125 to suit various application requirements.
Q3: What is the difference between the Motor Protection type and the Power Distribution type?
The Motor Protection type (suffix M) is designed for protecting and controlling AC motors with utilization categories such as AC-42, AC-43, and AC-44. The Power Distribution type (suffix P) is suitable for power distribution circuits, covering categories such as AC-40 and AC-41, including resistive and inductive load applications.
Q4: What do the four operating knob positions on the SJKCPS panel mean?
The four positions are: (1) Control Position — coil closed for remote or automatic operation; (2) Free Release Position — contacts open automatically upon fault detection; (3) Disconnection Position — both coil and main contacts are manually opened; (4) Re-engagement Position — the knob must be turned here to reset and restore normal operation after a fault trip.
Q5: What coil control voltages are supported by the SJKCPS device?
The SJKCPS supports two coil control voltage options: M for AC 230V and Q for AC 400V. The appropriate suffix should be specified when ordering to match your control circuit voltage requirements.
Q6: Is the F-type (Fire Protection Type) SJKCPS suitable for critical safety circuits?
The F-type (Fire Protection Type) SJKCPS provides alarm functionality upon fault detection but does not execute automatic tripping. This design ensures that fire protection circuits (such as fire pumps and emergency ventilation) remain operational even during fault conditions, making it suitable for critical fire safety installations. The basic type (unmarked) performs standard automatic tripping upon fault.