MCB CoS

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Pressfit’s SFT1 MCB Changeover Switch (COS) enables us to switch the load between two power supplies. In most cases, the COS is used to switch to a backup line when the main line needs to be taken offline for repair and maintenance. It is widely used in industries and in domestic locations where continuity of supply is necessary. It finds a lot of use in individual bungalows due to the same reason.

Changeover switches, in principle, disconnect switches independently based on manual operation, and can make, carrying, and breaking currents under normal circuit conditions. The COS has 3 positions – I-O-II with the center line being the off. The SFT1 COS comes in 2 types – DP and FP – for single and three phase applications, just like other circuit breakers.

DP COS 40A

DP MCB COS

FP COS 40A

FP MCB COS

EXCEPTIONAL FEATURES

Single Frame for Complete Range

Double Break Contact Mechanism

Easy Snap-On DIN Rail Mounting

Maximum Terminal Capacity of 35 sq. mm

  INSTALLATION

1. Switch off MCB and disconnect the power supply.
2. Mount COS over DIN rail with snap at bottom.
3. Check operation of knob position before connecting cables
4. When Knob position is I
a. Top indicator is RED, Bottom indicator is GREEN
b. Load is connected through power supply I
5. When Knob position is II
a. Top indicator is GREEN, Bottom indicator is RED
b. Load is connected through power supply II
6. When Knob is at MID position
a. Both indicators show GREEN & it is a No Load / Off position
7. Connect cables at incoming & outgoing terminals.
8. Select power supply (I or II) for Load.
9. Switch the MCB on.

  Technical Specifications:

Reference Standard

IS/IEC 60947-3

Current Rating (In)

25A, 40A, 63A

Poles

DP, FP

Rated Voltage (Ue)

240/415V AC

Rated Frequency (f)

50 Hz

Rated Insulation Voltage (Ui)

660V AC

Rated Impulse Voltage (Uimp)

4kV

Dielectric Strength

2500V for 1 minute

Utilization Category

AC22A

Protection Class

IP20

Ambient Temperature

-5° to 50° C

Mounting

Clip on DIN Rail (35mm x 7.5mm)

Our Goal

“If You Can’t Explain It Simply, You Don’t Understand It Well Enough” – Albert Einstein

Our goal is simple:

To become the brand people think of when they need any electrical product.

Get In Touch

  Press Fit Pipe and Profile
Plot No. 93, Sector 6A, Jawahar Talkies Compound, Kalyan-Ambernath Road, Ulhasnagar, Dist. Thane, Maharashtra – 421003.

  Toll-Free: 1800-2121-770
   Email: [email protected]

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