Limit Switch CR137-BZ-T2 | Roller Lever, IP54, 10 A 250 V
The CR137-BZ-T2 is a heavy-duty limit switch engineered for reliable position feedback and safety circuits in demanding industrial applications. Featuring a snap-action, positive-break NC contact that ensures machine stop even during contact weld scenarios, this switch delivers failsafe performance. The IP54-rated glass-fibre reinforced housing provides robust protection against dust, oil, and high temperatures up to 80°C without performance degradation.
Key Advantages
- Positive-break NC contact - failsafe compliance per IEC 60947-5-1
- Fixed roller lever - consistent 1.5 mm pre-travel with no field adjustment required
- IP54 protection - suitable for both indoor and outdoor panel mounting
- 30-million-cycle mechanism - significantly reduces maintenance downtime
- Two M20 cable entries - facilitates fast wiring with optional double cable glands
Technical Specifications
| Type |
CR137-BZ-T2 |
| Contact arrangement |
1 NC positive-break + 1 NO |
| Thermal current |
10 A |
| Rated insulation voltage |
250 V |
| Utilization category |
AC-15: 3 A / 250 V, DC-13: 0.3 A / 250 V |
| Protection degree |
IP54 (IEC 60529) |
| Housing / lever |
Glass-fibre reinforced PBT / stainless-steel roller |
| Cable entries |
2 × M20 × 1.5 (cable Ø 6 … 12 mm) |
| Operating / release force |
≤ 15 N / ≥ 4 N |
| Pre-travel / over-travel |
1.5 mm / ≥ 3 mm |
| Mechanical life |
≥ 30 million operations |
| Ambient temperature |
-30 °C … +80 °C |
| Mounting |
2 × captive M5 × 30 mm screws |
| Weight |
≈ 0.15 kg |
Typical Applications
Elevator limit & slowdown, overhead-door end-stop, conveyor over-travel guard, packaging-machine position feedback.