Speedfax 2017

Sentron Busway Systems
Service Heads
Selection
Service Heads are used to connect busway to a service entrance. In the Sentron Busway line, 3 single-phase service heads and
3-phase service head connections are available. The standard service entrance connection is the 3-phase service head which
consists of one service head for all three phases. 3 single-phase service heads consist of three heads – one for each phase and
may be used to meet the requirements of certain applications. To ensure ease of installation of incoming cables, both types of
Sentron service heads are constructed so that the lugs face the Glastic bottom of the box. The Glastic bottom provides
insulation and protection to the incoming cables.
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BUSWAY SYSTEMS
Single-Phase Service Heads, Dimensions (standard/min.)
Cable Lugs per
Dimensions Inches (mm) Phase and Neutral Ground
Ampere Rating Single-Phase “A” Qty. Size Lugs a
AL L-Rated
225 13 (330) 1 a 1
400 225 13 (330) 1 b 1
600 — 13 (330) 2 b 1
800 400 13 (330) 3 b 1
1000 600 13 (330) 4 b 1
1200 800 18 (457) 4 b 1
1350 1000 18 (457) 4 b 1
1600 1200 18 (457) 5 b 1
2000 1350,1600 20 (508) 6 b 2
2500 2000 27 (686) 8 b 2
3000 2500 29 (737) 9 b 2
3200 2000 29 (737) 9 b 2
4000 3000,3200 29 (737) 12 b 3
CU M-Rated
225 13 (330) 1 a 1
400 13 (330) 1 b 1
600 13 (330) 2 b 1
800 400 13 (330) 3 b 1
1000 — 13 (330) 4 b 1
1200 600 13 (330) 4 b 1
1350 800 13 (330) 4 b 1
1600 1000 18 (457) 5 b 1
2000 1200,1350 20 (508) 6 b 2
— 1600 18 (457) 5 b 1
2500 2000 20 (508) 8 b 2
3000 — 27 (686) 9 b 2
3200 — 27 (686) 9 b 2
4000 2500,3000,3200 27 (686) 12 b 3
5000 4000 29 (737) 15 b 4
Three Single-Phase Service Heads
Suffix V1TX
Three-Phase Service Heads, Dimensions (standard/min.)
Cable Lugs per
Dimensions Inches (mm) Phase and Neutral Ground
Ampere Rating Three-Phase “B” Qty. Size Lugs a
AL L-Rated
225 13 (330) 1 a 1
400 225 13 (330) 1 b 1
600 — 13 (330) 2 b 1
800 400 13 (330) 3 b 1
1000 600 13 (330) 4 b 1
1200 800 18 (457) 4 b 1
1350 1000 18 (457) 4 b 1
1600 1200 18 (457) 5 b 1
2000 1350,1600 18 (457) 6 b 2
2500 2000 27 (686) 8 b 2
3000 2500 27 (686) 9 b 2
3200 2000 27 (686) 9 b 2
4000 3000,3200 29 (737) 12 b 3
CU M-Rated
225 13 (330) 1 a 1
400 13 (330) 1 b 1
600 13 (330) 2 b 1
800 400 13 (330) 3 b 1
1000 — 13 (330) 4 b 1
1200 600 13 (330) 4 b 1
1350 800 13 (330) 4 b 1
1600 1000 18 (457) 5 b 1
2000 1200,1350 18 (457) 6 b 2
— 1600 18 (457) 5 b 1
2500 2000 18 (457) 8 b 2
3000 — 27 (686) 9 b 2
3200 — 27 (686) 9 b 2
4000 2500,3000,3200 27 (686) 12 b 3
5000 4000 29 (737) 15 b 4
Three-Phase Service Head
Suffix V3TX
a #6 AWG - 350 kcmil, Cu / Al.
b #4 AWG - 600 kcmil, Cu / Al.
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Siemens Industry, Inc. SPEEDFAX Product Catalog