Speedfax 2017

Molded Case Circuit Breakers
Reference Guide
Revised on 11/30/19
Selection/Application
Thermal-Magnetic Trip Breakers
General Purpose Breakers
7
MOLDED CASE
CIRCUIT BREAKERS
BQ BQH HBQ QR2 QRH2 HQR2 HQR2H
Page 7-38 7-38 7-38 7-40 7-40 7-40 7-40
Poles 1, 2, 3 1, 2, 3 1, 2, 3 2, 3 2, 3 2, 3 2, 3
1-Pole 15–70 15–70 15–50 — — — —
Amperes, Continuous
2-Pole 15–125 15–100 15–70 100–250 100–250 100–250 100–250
3-Pole 15–100 15–100 15–100 100–250 100–250 100–250 100–250
1-Pole 120/240 120/240 120/240 — — — —
Volts (50/60 Hertz)
2-Pole 240 240 240 240 240 240 240
3-Pole 240 240 240 240 240 240 240
120V 10,000 22,000 65,000 — — — —
UL
240V 10,000 22,000 65,000 10,000 25,000 65,000 100,000
480V — — — — — — —
600/347V — — — — — — —
AC
Icu — — — — — — —
1-Pole
220/
Ics — — — — — — —
240V
Icu — — — — — — —
2,3-Pole
Ics — — — — — — —
Ratings
DC
Dimensions
in inches
Overcurrent
Devices
Accessories and
Modifications
Individual
Enclosures
Interrupt Rating Symmetrical RMS Amperes
IEC
947-2
50/
60Hz
380/
415V
500V
1-Pole
2,3-Pole
1-Pole
2,3-Pole
Icu — — — — — — —
Ics — — — — — — —
Icu — — — — — — —
Ics — — — — — — —
Icu — — — — — — —
Ics — — — — — — —
Icu — — — — — — —
Ics — — — — — — —
Volts — 2-Pole — — — — — — —
Interrupting Rating — DC Amperes — — — — — — —
15–50A 3.75 3.75 4.00 — — — —
Height
55–125A 4.00 4.00 4.00 — — — —
60–225A — — — 7.00 7.00 7.00 7.00
1-Pole 1.00 1.00 1.00 — — — —
Width
2-Pole 2.00 2.00 2.00 3.00 3.00 3.00 3.00
3-Pole 3.00 3.00 3.00 4.50 4.50 4.50 4.50
Depth 2.37 2.37 2.37 2.53 2.53 2.53 2.53
Thermal and Fixed Magnetic Trip u u u u u u u
Molded Case Switch u — — — — — u
Undervoltage Trip — — — — — — —
Shunt Trip u u u u u u u
Auxiliary Switch u u u u u u u
Alarm Switch — — — — — — —
Mechanical Interlock — — — u u u u
Fungus Proofing (ref. page 7-156) u u u u u u u
Type 1 — Indoor Surface u u u u u u u
Type 1 — Indoor, Flush u u u u u u u
Type 3R — Outdoor-Rainproof u u u u u u u
Type 5, 12 — Lint, Fine Dust, Oils, Coolants — — — — — — —
BQ1B020 BQ1B020H HB1B020
For inches / millimeters conversion, see Application Data section.
CQD breakers are rated 14,000 KAIC at 480/277V.
Type CQD6—CSA only.
3-pole only.
d Applicable for 15-30A breakers only.
7-8
Siemens Industry, Inc. SPEEDFAX Product Catalog