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Technical Information - Rated Motors

UL-rated Gearmotors

About UL Ratings

UL stands for Underwriters Laboratories Inc., a private testing organization established in 1894 by the Association of American Fire Insurance to protect human live and property from fires, disasters, and other accidents. The organization tests and certifies a wide range of products, parts, and materials. Most American states have authorized the use of UL ratings.

Applicable Ratings

No. of phases UL rating
1-phase
  • UL 1004 (Regulations on overall motor design)
  • UL 2111 (Regulations on motor overheating protection)
3-phase
  • UL 1004 (Regulations on overall motor design)

*Three-phase gearmotors are only evaluated for design and are not tested for overheating protection.

About CSA Standards

Canadian law requires products to comply with CSA Standards. UL has been authorized as a certification organization for CSA Standards, so products certified as compliant with CSA standards may display the cUL mark and be used in Canada.

Relevant Standards

No. of phases CSA Standard
1-phase
  • C22.2 No. 100 (General motor regulations)
  • C22.2 No. 77 (Regulations on requirements for motors equipped with overheating protection devices)
3-phase
  • C22.2 No. 100 (General motor regulations)

UL-rated Gearmotors

Nissei 1-phase and 3-phase gearmotors display both the UL and cUL marks.

No. of phases Motor capacity Voltage (V)/
frequency (Hz)
Target model/series name
1-phase 15W to 90W
  • 100/100V,
    50/60Hz
  • 200/200V,
    50/60Hz
Hollow shaft/solid shaft
GTR-U Compact F2 Series
Right Angle shaft
GTR-U Compact Series
Parallel shaft
GTR-U Compact Series
3-phase 15W to 90W
  • 200/200/220V,
    50/60/60Hz
  • 380/400/400/440V,
    50/50/60/60Hz
1-phase 100W
  • 100/100V,
    50/60Hz
  • 200/200V,
    50/60Hz
Hollow shaft/solid shaft
GTR-U F Series
F2 Series
Right Angle shaft
GTR-U H2 Series
3-phase 0.1kW to 2.2kW
  • 200/200/220V,
    50/60/60Hz
  • 380/400/400/440V,
    50/50/60/60Hz
Hollow shaft/solid shaft
GTR-U F Series
F2 Series
Right Angle shaft
GTR-U H2 Series
Parallel shaftt
GTR-U G3 Series

UL File No.

  • 1-phase No. E141674
  • 3-phase No. E172621

*Available in motor- and brake-equipped models.
*Three-phase 0.1kW to 2.2kW gearmotors are available with double voltage motors.
*Please contact Nissei for information about voltages not listed above.
*Models with manual brake release devices are available (option).

Target models

15W to 90W
See the List of Rated Motor Models above.
Some models have frame numbers that differ from the corresponding standard domestic model. See the Rated Motor Model Scheme for more information.
0.1k to 2.2kW
Available in motor and brake-equipped models.

For more information, contact a Nissei sales office.

Differences with standard domestic models

Because rated motors differ from standard domestic models, only Nissei can perform motor manufacturing, modification, or repair.
Unless otherwise specified, 3- and 1-phase 15W to 90W gearmotors, 3-phase 0.1kW to 0.4kW gearmotors, and 1-phase 100W gearmotors ship with bare motor lead wires (no connectors attached). The following optional terminal boxes can be specified:

1. C-Type terminal box

3-phase/1-phase 15W to 90W (for use with both motor- and brake-equipped gearmotors)

C-Type terminal box

2. A-Type terminal box

0.1kW to 0.4kW 1-phase 100W (for use with both motor- and brake-equipped gearmotors)

A-Type terminal box

*Gearmotors with motor capacities of 0.75kW to 2.2kW ship standard with terminal boxes, following the same specifications as the domestic Japanese models.

Nameplate (1-phase/3-phase 15W to 90W)

Nameplate (1-phase/3-phase 15W to 90W)

Nameplate (1-phase 100W/3-phase 0.1kW to 2.2kW)

Nameplate (1-phase 100W/3-phase 0.1kW to 2.2kW)