Socket module UTM 3121-12 – socket module for SMC module centers. Includes 3 x 16A (230V), 1 x 16A, 2 x 32A and 1 x 63A socket outlets.

Socket module UTM 3121-12 on the worksite

A socket module is the outlet point of a modular board. Power for hand tools, lighting and dryers is taken from it, and the number of outputs determines how many work points one board can serve.

Modules clip into the board’s busbar system, so the configuration can be changed as the project progresses without rewiring.

The product occupies 4 module slots. Module slots are a limited resource, so the configuration is worth planning before ordering.

Where Socket module UTM 3121-12 is used

Typical sites are construction projects, renovations, industrial maintenance and event power. What they share is that the electrical supply is temporary and the conditions are demanding.

Temporary does not mean lighter requirements. Site equipment is exposed to dust, moisture, moving and mechanical stress in a way that fixed installations never are.

Check the load distribution between phases during use. Uneven distribution overloads one phase while the others run half empty, and the usual symptom is a fuse that keeps tripping.

Socket module UTM 3121-12 – how to choose the right model

The equipment is chosen by rated current and outputs. Start by calculating the simultaneous load and the output types needed, and choose the model on that basis.

Other models of the same type are Socket module UTM 0002-02, Socket module UTM 0003-03, Socket module UTM 332-21, Socket module UTM 324-12, Socket module UTM 36-3.

Other details that affect the choice: weight 13 kg, dimensions 250 x 825 x 180 mm. These are worth checking already at the quotation stage.

You can see the full range in the product group, and read about real-time monitoring on the Spine page.

Practical notes for use

Winter brings requirements of its own. Condensation forms when cold equipment is brought into the warm, and moisture inside the enclosure is a common reason for an RCD tripping with no visible cause.

Mark the equipment with the site details and keep a record of what is fed from where. On a site with several contractors that saves time at every fault-finding.

RCD protection is mandatory for socket outputs on a site. Its operation is tested with the test button at commissioning and at regular intervals afterwards.

Socket module UTM 3121-12 – installation and maintenance

Installation and connection work is carried out by a qualified electrician. The equipment must be made dead before connection work, and the absence of voltage verified by measurement.

The unit clips into the board’s busbar system on spring contacts, so no separate wiring is needed. Check the tightness of the fixing after installation – a loose contact heats up.

The unit weighs 13 kg. Take the weight into account when moving and lifting – damage is most often caused during transport, not in use.

Check the joints and fixings regularly during use. A joint that heats up is a sign of a fault and should be corrected before the fault spreads.

Safety and inspections

Site electrical installations are subject to the same requirements as fixed installations, and some of them are stricter. The equipment has to withstand moving, dust, moisture and mechanical stress for the whole project.

The installation is inspected at commissioning and regularly during use: enclosure, joints, the operation of the protective devices and the fact that live parts cannot be reached.

Damaged equipment is not repaired improvised on site. A cracked enclosure, a burnt terminal or a damaged socket is replaced – on a site a temporary repair almost always becomes permanent.

Document the configuration and any changes made. Up-to-date information on outputs and protection speeds up fault-finding and the next inspection.

Delivery and sizing help

We deliver the equipment together with the cables and the rest of the site power supply in one delivery, so the set is complete when it arrives on site.

Describe the whole site in your request for quotation: supply power, the outputs needed and the estimated length of the project. We size the set on that basis.

We also help with the sizing. If you are unsure about the size or the number of outputs, ask us – equipment sized wrong costs more than equipment chosen right the first time.

Socket module UTM 3121-12 – technical data

Model	UTM 3121-12
Supply	NH00 100 A
Residual current device (RCD)	1 x 0,03 A ja 2 x 0,5 A
Module slots	4
Weight	13 kg
Dimensions (W×H×D)	250 x 825 x 180 mm

Frequently asked questions

How many module slots does the product occupy?

The product occupies 4 module slots.

What are the dimensions?

Dimensions: 250 x 825 x 180 mm.

How much does the product weigh?

Weight: 13 kg.

Who may install the product?

Installation is carried out by a qualified electrician. The requirements are explained in more detail on the Tukes website.

The requirements for electrical installations on worksites are explained in more detail on the Tukes website.

Request a quotation

Add to the quotation basket and send us your request – we will confirm availability and delivery time at the same time. You can see the full range in the product group.