Copper 3D Style

Type 3D 3-way, copper side break switch

Type: 3D
Orientation: Phase-over-phase mounting
Ratings: 15kV through 161kV
Ratings A: 600, 1200 and 2000 Amperes
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Copper construction, field-proven performance and phase-over-phase designs.

Turner’s Type 3D side break switch is well suited for phase-over-phase applications, phase-next-to-phase and triangular configurations on the transmission system. Unlike many so-called transmission-switching products that are merely substation switches modified for use on the transmission system, the Type 3D is a true transmission switch. It is designed and built for the harsh environmental conditions, galloping conductors and constant pole movement inherent in severe aerial applications.

The Type 3D switch is designed as a stock switch, suitable for almost any application. A rigid, hard-drawn copper blade with patented locking device, silver-to-copper contacts, double-spring arcing horns and sealed hinge contacts provide heavy-duty construction. Turner Type 3D switches can be used for station isolating and bypassing, distribution and transmission line sectionalizing or isolating arrestors, metering equipment and other apparatus. Right hand or left hand opening can be specified at time of order. They are easily upgraded for automatic operation and load breaking.

Secure Blade Closing

Turner Type 3D switches firmly close into position, with the blade tip engaging the jaws with sufficient force to expand the contact jaws, preventing any blade bounce. Both the blade and jaw contacts are wiped clean during the closing action to ensure a low resistance current transfer. A heavy-duty blade-locking device keeps the blade closed despite temporary faults, surge currents, twist­ing structures or galloping conductors.

The lock is released during the switch opening sequence. This action, exclusive to Turner 3D switches, breaks up any ice or contamination, and releases the contact friction, allowing the blade to easily be removed from the contacts.

Make Your Side Break a Load-Break Switch

For more than 35 years, Turner Electric’s TECO-Rupter® Vacuum Interrupters have been the technology of choice for loop and load-break applications because of their current-interrupting ability, superior reliability and ease of application.

The TECO-Rupter offers industry leading performance levels including superior TRV ratings compared to other load-break technologies such as SF6, longer service life and greater interrupting capacity. No other load-break device provides 5,000 full load operations at either 2,000 or 3,000 Ampere ratings and a TRV rating up to 57kV.

Ordering Information

Switch Rating Station Post Insulators Catalog Number
Voltage Continuous
Peak Amps Technical
Reference #
15kV 600 65,000 TR205 3D01506
1200 99,000 3D01512
2000 164,000 3D01520
23kV 600 65,000 TR208 3D02306
1200 99,000 3D02312
2000 164,000 3D02320
34kV 600 65,000 TR210 3D03406
1200 99,000 3D03412
2000 164,000 3D03420
46kV 600 65,000 TR214 3D04606
1200 99,000 3D04612
2000 164,000 3D04620
69kV 600 65,000 TR216 3D06906
1200 99,000 3D06912
2000 164,000 3D06920
115kV 600 65,000 TR286 3D11506
1200 99,000 3D11512
2000 164,000 3D11520
138kV 600 65,000 TR288 3D13806
1200 99,000 3D13812
2000 164,000 3D13820
161kV 600 65,000 TR291 3D16106
1200 99,000 3D16112
2000 164,000 3D16120