Description
Introduction
With the Schischek InMax-50-SF3 | 50 Nm, quarter-turn actuator, IP67, you choose an industrial InMax actuator with IP67, universal power supply 24…240 VAC/DC, and flexible control.
This increases safety and continuity in any room, while also benefiting from simple integration and reliable performance.
Features
- IP67 enclosure; therefore suitable for demanding environments
- Universal power supply 24…240 VAC/DC
- Including 3-point, on/off or modulating 0–10 V / 4–20 mA
- Available with spring return (~3 s or ~20 s), depending on variant
- Ex-safe circuit and tripping (variant-dependent)
Technical specifications
| Supply voltage | 24…240 VAC/DC (self-adjusting) |
| Control | On/off, 3-point or 0–10 V / 4–20 mA (per variant) |
| Protection class | IP67 |
| Rotation angle | 95° incl. ~5° preloading |
| Safety | Ex-safe circuit / tripping (variant-dependent) |
| Spring return | ~3 s or ~20 s (variant-dependent) |
| Temperature range | -20…+50 °C (M series; per type) |
| Housing | Aluminium (CTM) or stainless steel (VAM) options |
| Mounting | Direct coupling double square 16×16 mm / 12×12 mm (S) |
Available variants
| Product name | Description |
|---|---|
| InMax-50-SF3 | Torque: 40 Nm; Control: On-off; Spring: ~3 s/90°; Running time: 40/60/90/120/150 s |
| InMax-50-BF | Torque: 50 Nm; Control: On-off/3-point; Spring: ~20 s/90°; Running time: 40/60/90/120/150 s |
| InMax-50-YF | Torque: 50 Nm; Control: 0–10 V / 4–20 mA; Spring: ~20 s/90°; Running time: 40/60/90/120/150 s |
| InMax-50-F3 | Torque: 40 Nm; Control: On-off; Spring: ~3 s/90°; Running time: 40/60/90/120/150 s |
| InMax-50-BF3 | Torque: 40 Nm; Control: On-off + TT; Spring: ~3 s/90°; Running time: 40/60/90/120/150 s |
FAQ
What does the Ex-safe circuit do?
It means the actuator switches off safely in the event of faults; this minimizes risks.
Which control do I need?
Compared with on/off, modulating (0–10 V/4–20 mA) provides more precise control.
When should I choose spring return?
In the event of power failure, the valve automatically returns to a safe position; this increases operational reliability.
Will this fit my system?
Yes, and it also connects to common HVAC and process control systems.
Do you have any questions or would you like more information? Please contact us! You can do so by phone, email or, also nice, via the chat function.
Available actuators in the InMax-M series | 30-150 N·m
InMax-M | without spring return | 50…150 N·m | for installation in a safe environment
| Type | Torque | Spring return | Control | Data sheet | Additional info | EU conformity |
| InMax-50.75 | 50/75 N·m | – | Open-close, 3-point |  | | |
| InMax-100 | 100 N·m | – | Open-close, 3-point | | | |
| InMax-150 | 150 N·m | – | Open-close, 3-point | | | |
| InMax-50.75-S | 50/75 N·m | – | Open-close, 3-point | | | |
| InMax-100-S | 100 N·m | – | Open-close, 3-point | | | |
| InMax-150-S | 150 N·m | – | Open-close, 3-point | | | |
| InMax-50.75-Y | 50/75 N·m | – | 0-10 V, 4-20 mA | | | |
| InMax-100-Y | 100 N·m | – | 0-10 V, 4-20 mA | | | |
InMax-M | with spring return | 30…60 N·m | for installation in a safe environment
| Type | Torque | Spring return | Control | Data sheet | Additional info | EU conformity |
| InMax-30-F | 30 Nm | approx. 20 sec. / 90° | Open-close, 3-point | | | |
| InMax-50-F | 50 Nm | approx. 20 sec. / 90° | Open-close, 3-point | | | |
| InMax-60-F | 60 N·m | approx. 20 sec. / 90° | Open-close, 3-point | | | |
| InMax-30-SF | 30 Nm | approx. 20 sec. / 90° | Open-close, 3-point | | | |
| InMax-50-SF | 50 Nm | approx. 20 sec. / 90° | Open-close, 3-point | | | |
| InMax-60-SF | 60 N·m | approx. 20 sec. / 90° | Open-close, 3-point | | | |
| InMax-30-YF | 30 Nm | approx. 20 sec. / 90° | 0-10 V, 4-20 mA | | | |
| InMax-50-YF | 50 Nm | approx. 20 sec. / 90° | 0-10 V, 4-20 mA | | | |
| InMax-30-BF | 30 Nm | approx. 20 sec. / 90° | Open-close, 3-point | | | |
| InMax-50-BF | 50 Nm | approx. 20 sec. / 90° | Open-close, 3-point | | | |
| InMax-60-BF | 60 N·m | approx. 20 sec. / 90° | Open-close, 3-point | | | |
| InMax-30-F3 | 30 Nm | < 3 sec. / 90° | Open-close | | | |
| InMax-50-F3 | 50 Nm | < 3 sec. / 90° | Open-close | | | |
| InMax-30-SF3 | 30 Nm | < 3 sec. / 90° | Open-close | | | |
| InMax-50-SF3 | 50 Nm | < 3 sec. / 90° | Open-close | | | |
| InMax-30-BF3 | 30 Nm | < 3 sec. / 90° | Open-close | | | |
| InMax-50-BF3 | 50 Nm | < 3 sec. / 90° | Open-close | | | |
Scope of delivery – InMax (size S or M)
1 × actuator with 1 m cable 1 × Allen key for manual override 4 × screws for mounting Special models – InMax -…- BF (size S or M) Actuators for fire dampers (InMax -…- BF) + safety temperature switch InPro-TT- ..
Special models in stainless steel
– InMax -…- VAS / VAM (size S or M) Corrosion-resistant enclosure material in stainless steel comparable to AISI 316, some parts nickel-plated, screws in stainless steel For use under extreme weather or harsh climatic conditions Special models painted (coated)
– InMax -…- CTS / CTM (size S or M) Aluminium enclosure with seawater-resistant offshore / marine coating, resistant to corrosive and maritime atmospheres, some parts nickel-plated, screws in stainless steel Suitable for offshore or onshore applications
Accessories / options – InMax (size S or M)
- External adjustable, field-adjustable switches
- Mounting clamp for round damper shaft (only for InMax size S)
- Ex-e junction box
- Adaptations for butterfly or ball valves
- Mounting bracket
- Cable glands in nickel-plated brass
- Protective cover in stainless steel for mounting on InMax actuators
- ExPolar heating system for use with InMax actuators at low temperatures down to -50°C