CWB9 (3-pole 9 A)
WEG · CWB 9–25 A frame
Entry frame of WEG's CWB line, which replaced the long-running CWM series. Common on WEG-packaged motors, small compressors and pump skids worldwide; standard aux contact built into the front face.
Ratings
- AC-3 (440 V)
- 9 A
- AC-1 (resistive)
- 25 A
- Hp (3Φ)
- 3 HP @ 230 V · 5 HP @ 460 V
- Hp (1Φ)
- 0.5 HP @ 115 V · 1.5 HP @ 230 V
- Single-phase HP
- 0.5 HP @ 115 V · 1.5 HP @ 230 V
- Three-phase HP
- 3 HP @ 230 V · 5 HP @ 460 V
Coil data
- Available coil voltages
- Suffix-coded coil: 24 VAC, 120 VAC, 208–240 VAC, 480 VAC 50/60 Hz (e.g. D02 = 24 V — verify code on the coil label); 24 VDC and electronic wide-range options
- Inrush VA
- ≈ 65 VA
- Sealed (holding) VA
- ≈ 7.5 VA
- Pickup voltage
- ≥ 80% of rated (60 Hz coil)
- Dropout voltage
- ≈ 40–65% of rated
Typical measured coil resistance (±15%, ballpark)
24 VAC≈ 10–18 Ω
120 VAC≈ 180–350 Ω
208–240 VAC≈ 700–1,200 Ω
OL = open coil · near zero = shorted turns · coil-to-frame must read >1 MΩ.
Coil resistance checker
Pick the coil voltage, enter your meter reading across A1–A2 (coil disconnected), and compare it to the expected ballpark.
Ω
This model (24 VAC table value)10 Ω–18 Ω
Generic small-frame 24 VAC8 Ω–16 Ω
OL = open coil. 0–2 Ω = shorted turns (often from a cooked transformer). Ballpark only (±15%+); electronic wide-range coils (e.g. ABB AF) read misleading values — test those at rated voltage instead. Always measure coil-to-frame too: must be >1 MΩ.
Terminals & accessories
Power/coil terminals: L1–L3 top, T1–T3 bottom; A1/A2 coil top-front; screw terminals, finger-safe
Auxiliary contacts: 1 built-in front aux (NO or NC per part number, '-11' / '-10' suffix); BFB front blocks add up to 4 more
Companion overload: RW27 thermal overload (direct-mount under the contactor); RW27D for phase-loss sensitivity
Cross-references
- Schneider LC1D09 / LC1D12
- Siemens 3RT2016/17 (S00)
- ABB AF09 / A9
- Allen-Bradley 100-C09
- Eaton XTCE009B
- Legacy: WEG CWM9
Field notes
- CWM → CWB migration is nearly bolt-on for 9–25 A: same footprint concept but confirm aux-contact arrangement — CWB carries it on the front face, CWM on the side.
- The '-11' suffix means one NO + one NC built in; '-10' is NO only. A missing interlock signal is often a misread suffix, not a failed contact.
- WEG coils are dual-frequency 50/60 Hz on most codes — one coil stock covers both grids.
Manufacturer documentation