CA7-23 (3-pole 23 A)
Sprecher + Schuh · Series CA7, 45 mm frame
Sprecher + Schuh CA7-23 — a rugged IEC contactor used in North American OEM panels and as a common cross for Allen-Bradley 100-C in industrial air systems.
Ratings
- AC-3 (480 V)
- 23 A
- AC-1
- 40 A
- Hp (3Φ)
- 7.5 HP @ 230 V · 15 HP @ 460 V
- Three-phase HP
- 7.5 HP @ 230 V · 15 HP @ 460 V
Coil data
- Available coil voltages
- 24, 120, 208, 240, 277, 480, 600 VAC 60 Hz; DC and electronic coil options
- Inrush VA
- ≈ 120 VA
- Sealed (holding) VA
- ≈ 10 VA
- Pickup voltage
- 0.85–1.1 × rated
- Dropout voltage
- 0.3–0.6 × rated
Typical measured coil resistance (±15%, ballpark)
24 VAC≈ 5–11 Ω
120 VAC≈ 120–250 Ω
480 VAC≈ 2,000–3,900 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)5 Ω–11 Ω
Generic mid-frame 24 VAC4 Ω–9 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: Box lug to 6 AWG; finger-safe
Auxiliary contacts: 1 built-in; CA7-PV front and CA7-KC side blocks
Companion overload: CEP7 electronic or CT7 thermal overload, direct-mount
Cross-references
- Allen-Bradley 100-C23
- Schneider LC1D25
- WEG CWB25
- ABB AF26
- Eaton XTCE025C
Field notes
- CA7 bodies are dimensionally close to the 100-C but the mounting and aux blocks are brand-specific — don't mix accessories.
- CEP7 electronic overloads have a trip-class dial and a phase-loss function that trips fast on single-phasing — a real benefit on 3-phase recips.
- Sprecher + Schuh publishes a full cross-reference in Section A of their e-catalog; useful when replacing obsolete brands.
Sprecher + Schuh resources
Links go to the manufacturer's current catalog or product page — model-specific pages are often retired, so these stay live.
Manufacturer documentation