Eaton Disconnector Switch - DMM - 1314203 DMM-125/1-SK
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Product Information
Full details
This guide is for electricians and industrial maintenance professionals who need a reliable 4-pole disconnector switch. The Eaton DMM 1314203 offers robust circuit isolation up to 125A and 690V, ensuring safety and operational continuity. A key caveat is that it requires separate purchase of a rotary handle and drive shaft for operation.
All features
| Series | DMM |
|---|---|
| Model Part Number | 1314203 |
| Brand | EATON INDUSTRIES |
Extended Product Information
FAQs
What is the maximum voltage and current rating of this disconnector switch?
The maximum rated operation voltage (Ue) AC is 690 V, and the rated permanent current (Iu) is 125 A.
Does the switch come with a handle?
No, the rotary handle and drive shaft are optional and must be purchased separately.
What is the IP rating of this device?
The device has an IP20 rating, offering protection against solid objects larger than 12.5mm.
Can this disconnector be used for DC circuits?
This disconnector is designed for AC circuits up to 690V. It is not rated for DC applications.
What are the dimensions of the Eaton DMM-125/1-SK?
The dimensions are: Width 132 mm, Height 108 mm, Depth 152 mm.
How should this switch be mounted?
It is designed for fixed built-in technique, suitable for floor mounting and distribution board installation.
What is the rated short-circuit withstand capability?
The rated short-time withstand current (Icw) is 2.5 kA, and the conditioned rated short-circuit current (Iq) is 50 kA.
Troubleshooting
Switch does not operate.
Verify that the rotary handle and drive shaft are correctly installed and engaged with the switch mechanism. Ensure the switch is not in a locked position if a locking mechanism is engaged.
Overheating at terminals.
Check that all power connections are securely tightened according to specifications. Ensure the current load does not exceed the rated AC-23 (66A at 400V) or AC-21 (125A at 400V) limits.
Device fails to interrupt the circuit.
Confirm that the load current is within the switch's rated capacity. If the issue persists, the device may be damaged and requires replacement by a qualified professional.
Pros and Cons
Pros
- High current and voltage ratings ensure broad applicability.
- Robust construction for demanding industrial environments.
- 4-pole design provides comprehensive circuit isolation.
- Compact dimensions for space-efficient installations.
- Reliable performance backed by Eaton's reputation.
Cons
- Rotary handle and drive shaft are sold separately, adding to setup cost.
- IP20 rating offers limited protection against dust and moisture.
- Primarily designed for fixed installations, less suitable for mobile applications.
Setup, Compatibility & Care
Setup: This switch-disconnector is designed for fixed built-in installation, typically within distribution boards or control cabinets. Ensure the mounting surface is suitable for the device's dimensions (132 mm Width, 108 mm Height, 152 mm Depth). Wiring should be performed by a qualified electrician, adhering to all local electrical codes. A separate rotary handle and drive shaft are required for operation and must be ordered according to the DMM series specifications.
Compatibility: Compatible with standard industrial electrical systems up to 690V AC and 125A. It is designed for panel or floor mounting.
Care: Keep the device clean and free from dust and debris. The IP20 rating means it should be installed in an environment protected from moisture and excessive dust. Periodic visual inspection for any signs of damage or wear is recommended. Ensure connections remain tight to prevent overheating.