![[Mitsubishi Electric] - SRTD-NN Pneumatic Timer (On delay, DC operated, 0.1 to 60s)](https://img.prosourcemro.com/2026/08/Mstn-photo-srt-1.png)
Timers
MITSUBISHI ELECTRIC
[Mitsubishi Electric] - SRTD-NN Pneumatic Timer (On delay, DC operated, 0.1 to 60s)
Family ID: MEL-SRT-SRTDNN
Mitsubishi Electric MS-T/N series SRTD-NN pneumatic timer for control equipment timer elements where highly accurate time setting is not required. On delay type, dc operated, time range 0.1 to 60 seconds. Output contacts are 1a1b timed plus 2a2b instantaneous, all high reliability twin contacts, and every contact can be used at a different voltage so sequence circuits can be combined freely. A large knob rotation angle in the short time region makes time setting easy and a manual check button allows sequence checking by hand. IEC 35mm rail mounting is fitted as standard, and a terminal cover version with CAN terminals is available by adding CX to the model name. Operating coil designations follow same as the srd-k100 auxiliary relay, dc24v to dc220v. Rated insulation voltage 660V, allowable voltage range 85 to 110 percent of rated voltage at 40 degrees C hot. Note that the time delay varies by up to about twice depending on ambient temperature and ageing.
14 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| SRTD-NN DC24V | SRTD-NN pneumatic timer, on delay, DC24V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: Standard · Operating Coil Designation: DC24V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NNCX DC24V | SRTD-NNCX pneumatic timer, on delay, DC24V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: CAN terminal cover fitted · Operating Coil Designation: DC24V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NN DC48V | SRTD-NN pneumatic timer, on delay, DC48V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: Standard · Operating Coil Designation: DC48V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NNCX DC48V | SRTD-NNCX pneumatic timer, on delay, DC48V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: CAN terminal cover fitted · Operating Coil Designation: DC48V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NN DC100V | SRTD-NN pneumatic timer, on delay, DC100V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: Standard · Operating Coil Designation: DC100V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NNCX DC100V | SRTD-NNCX pneumatic timer, on delay, DC100V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: CAN terminal cover fitted · Operating Coil Designation: DC100V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NN DC110V | SRTD-NN pneumatic timer, on delay, DC110V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: Standard · Operating Coil Designation: DC110V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NNCX DC110V | SRTD-NNCX pneumatic timer, on delay, DC110V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: CAN terminal cover fitted · Operating Coil Designation: DC110V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NN DC125V | SRTD-NN pneumatic timer, on delay, DC125V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: Standard · Operating Coil Designation: DC125V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NNCX DC125V | SRTD-NNCX pneumatic timer, on delay, DC125V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: CAN terminal cover fitted · Operating Coil Designation: DC125V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NN DC200V | SRTD-NN pneumatic timer, on delay, DC200V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: Standard · Operating Coil Designation: DC200V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NNCX DC200V | SRTD-NNCX pneumatic timer, on delay, DC200V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: CAN terminal cover fitted · Operating Coil Designation: DC200V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NN DC220V | SRTD-NN pneumatic timer, on delay, DC220V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: Standard · Operating Coil Designation: DC220V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard | ||
| SRTD-NNCX DC220V | SRTD-NNCX pneumatic timer, on delay, DC220V coil | Mitsubishi Electric | Type: Pneumatic timer · Time Delay Method: On delay · Operation: DC operated · Terminal Cover: CAN terminal cover fitted · Operating Coil Designation: DC220V · Operating Coil Reference: Same as the SRD-K100 auxiliary relay, DC24V to DC220V · Rated Insulation Voltage: 660V · Time Range: 0.1 to 60 seconds · Output Contact: 2a2b instantaneous contacts plus 1a1b timed contacts, all twin contacts · Contact Rating AC-15 Class: AC110V 5A timed and 6A instantaneous, AC220V 3A and 3A, AC440V 1A and 1.5A, AC550V 1A and 1.2A · Contact Rating DC24V: 1A timed and 3A instantaneous · Voltage Variation Error: Plus or minus 20 percent over 85 to 110 percent of rated voltage · Allowable Voltage Range: 85 to 110 percent of rated voltage at 40 degrees C hot · Mounting: IEC 35mm rail mounting fitted as standard |
