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The T-126(SP) is a premium rank II Soviet light tank with a battle rating of 2.7 (AB/RB/SB). It was introduced in Update 1.47 "Big Guns". A premium version of the T-50, being its prototype design, it shares it similarities, but actually is better due to much thicker armour all around. An unfortunate side effect results in a decrease in top overall speed due to weight of added armor.

General info

Survivability and armour

Armour type:

  • Rolled homogeneous armour
Armour Front Sides Rear Roof
Hull 55 mm (53-54°) Front glacis
45 mm (53°) Cheeks
45 mm (44°) Lower glacis
45 mm (38-41°) Top
45 mm Bottom
30 mm (56°) Top
30 mm (5-42°) Bottom
15 mm
Turret 45 mm (6-72°) Turret front
40 mm (9-48°) Gun mantlet
45 mm (24-27°) 45 mm (24°) 15 mm


  • Suspension wheels and tracks are 15 mm thick in armour.


Mobility characteristic
Weight (tons) Add-on Armour
weight (tons)
Max speed (km/h)
18.3 N/A 39 (AB)
35 (RB/SB)
Engine power (horsepower)
Mode Stock Upgraded
Arcade 465 572
Realistic/Simulator 265 300
Power-to-weight ratio (hp/ton)
Mode Stock Upgraded
Arcade 25.41 31.26
Realistic/Simulator 14.48 16.39


Main armament

Main article: 20-K (45 mm)
45 mm 20-K
Capacity Vertical
150 -8°/+25° ±180° N/A
Turret rotation speed (°/s)
Mode Stock Upgraded Prior + Full crew Prior + Expert qualif. Prior + Ace qualif.
Arcade 7.62 10.54 __.__ __.__ 15.06
Realistic 4.76 5.6 __.__ __.__ 8.00
Reloading rate (seconds)
Stock Prior + Full crew Prior + Expert qualif. Prior + Ace qualif.
3.48 __.__ __.__ 2.90
Penetration statistics
Ammunition Type of
Penetration in mm @ 0° Angle of Attack
10m 100m 500m 1000m 1500m 2000m
BR-240 APHEBC 69 68 59 50 42 35
BR-240SP AP 73 71 62 52 44 37
BR-240P APCR 103 94 64 40 21 17
Shell details
Ammunition Type of
in m/s
Mass in kg
Fuse delay

in m:

Fuse sensitivity

in mm:

Explosive Mass in g
(TNT equivalent):
Normalization At 30°
from horizontal:
0% 50% 100%
BR-240 APHEBC 760 1.43 1.2 15 29.26 +4° 48° 63° 71°
BR-240SP AP 757 1.43 N/A N/A N/A -1° 47° 60° 65°
BR-240P APCR 985 0.85 N/A N/A N/A +1.5° 66° 70° 72°
Ammo racks
Ammo racks of the T-126(SP).
rack empty
rack empty
rack empty
rack empty
rack empty
150 121 (+29) 91 (+59) 61 (+89) 31 (+119) 1 (+149) Yes

Machine guns

Main article: DT (7.62 mm)
7.62 mm DT
Coaxial mount
Capacity (Belt capacity) Fire rate
1,890 (63) 600 N/A N/A

Usage in battles

Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).

Pros and cons


  • Up-armored angled front plate giving good protection
  • Serviceable cannon at its rank
  • Angled armour all around upper hull
  • Decent mobility


  • Slow turret rotation
  • Gun mantlet is a significant weakspot
  • Struggles in an up-tiered battle
  • Cheeks on the corner of the frontal armour, which results in massive weakspots if you are not facing enemies
  • Limited gun depression
  • 4-man crew extremely tightly packed - a penetrating APHE can easily knock out all 4



The Spanish Civil War gave the Soviets insight on the future of tank warfare, and the knowledge led to an attempt to upgrade or replace their tank forces that consisted mainly of the T-26 light tanks. The development started in 1939 to create a replacement with for the T-26 and BT light tanks.

The project for the new tank began as the SP project, which is short for Soprovzhdeniya Pekhoty, which means "Infantry Support". The project was headed by the OKMO tank design bureau at the S.M. Kirov Factory No. 185 in Leningrad under the individuals L. Troyanov and I. Bushnevov. Two prototypes, the T-126 and the T-127 was built, and the T-126 was to be further developed into the finished design. The finished design would become the T-50 light tank, which was an intricate light tank for the Soviets at the time. The tank featured sloping armour, torsion bar suspension, diesel engine, three-man turret, and a commander's cupola, all of which were advanced features at the time.


The tank would eventually be produced in 1941 during the German invasion in Operation Barbarossa. Only 69 T-50s were made before production ended in January 1942, the design suffered from being expensive, unreliable, and over-engineered. Today, two T-50 survive in intact condition, one normal variant in the Kubinka Tank Museum, and an up-armoured variant in Finland at a museum in Parola.

In-game description

The T-126 experimental light tank was built in the summer of 1940 at Leningrad Experimental Automobile Factory #185. The project was developed on the basis of combat experience in Spain with the goal of creating a tank suitable for the conditions of future wars. Only one model of the tank was ever built, and it was never used in combat.


Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the vehicles;
  • links to approximate analogues of other nations and research trees.

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on the tank;
  • other literature.

USSR light tanks
T-26  T-26 · T-26 (1st Gv.T.Br.) · T-26E · T-26-4
BT  BT-5 · RBT-5 · BT-7 · BT-7 TD · BT-7 (F-32)
BMP  BMP-1 · BMP-2 · BMP-2M · BMP-3
Other  T-50 · T-60 · T-70 · T-80 · T-126
  BA-11 · PT-76B · Object 685 · Object 906
China  ▂Type 62

USSR premium ground vehicles
Light tanks  BA-11 · RBT-5 · BT-7 (F-32) · T-26 (1st Gv.T.Br.) · T-26E · T-126
Medium tanks  T-34 (Prototype) · T-34 (1st Gv.T.Br.) · T-34E · T-34-57 (1943) · T-34-85E · T-34-100 · T-44-122 · T-55AM-1 · T-72AV (TURMS-T)
  ▂M3 Medium · ▂M4A2 · ▂T-III · ▂T-V · ▂МК-IX "Valentine"
Heavy tanks  SMK · T-35 · ▂MK-II "Matilda" · KV-1E · KV-2 (1940) · KV-2 (ZiS-6) · KV-122 · KV-220 · IS-2 "Revenge" · IS-6 · T-10A
Tank destroyers  BM-13N · BM-8-24 · SU-57 · SU-76M (5th Gv.Kav.Corps) · SU-85A · SU-100Y · SU-122P · Object 120
SPAA  ▂Phòng không T-34 · ZUT-37