509091 - Power Supply Intellinet - Free user manual and instructions

Product Type	DIN Rail Power Supply
Brand	Intellinet
Model	509091
Input Voltage	90-264 VAC (universal)
Output Voltage	24 VDC (typical, check label)
Mounting	Vertical on TS35 DIN rail; input terminals at bottom, output at top
Ventilation Clearance	5 mm left/right, 40 mm above, 20 mm below
Recommended Wire	AWG 18 (7A), AWG 16 (10A), AWG 14 (15A), AWG 12 (20A); copper only
Wire Temperature Rating	At least 80°C (UL1007)
Wire Stripping Length	5 mm (0.197 in)
Recommended Screwdriver	3 mm slotted
Torque Setting (I/P & O/P)	6.9-10.35 kgf-cm depending on model
Fuse Recommendation	T3.15A/L250V (NDR-75) to T8A/L250V (NDR-480)
Circuit Breaker (230V)	Up to 13 units on C16 (NDR-75), down to 3 units on D16 (NDR-480)
Operating Temperature	Max 45°C (NDR-75-12) or 50°C (other models)
Pollution Degree	2 (non-conductive pollution, occasional condensation)
Safety	Do not open case; risk of shock, arc, burn; connect FG to PE
Compliance	Designed per Mean Well NDR series specifications

Frequently Asked Questions - 509091 Intellinet

How should I mount the Intellinet 509091 power supply?

Mount it vertically on a TS35 DIN rail with input terminals at the bottom and output at the top. Ensure proper ventilation: 5 mm left/right, 40 mm above, and 20 mm below.

What wire size should I use for the 509091?

Use copper wire only. Recommended sizes: AWG 18 (7A), AWG 16 (10A), AWG 14 (15A), or AWG 12 (20A). If using 5 or more wires, derate to 80% of the rated current.

What is the recommended torque for the terminal screws?

Torque settings vary by model: NDR-75: 6.9 kgf-cm, NDR-120/240: 7.5 kgf-cm, NDR-480: 10.35 kgf-cm for both input and output.

What fuse should I use with the 509091?

Fuse recommendation depends on the specific NDR model: T3.15A/L250V for NDR-75, T4A for NDR-120, T5A for NDR-240, T8A for NDR-480.

Can I connect multiple units to one circuit breaker?

Yes, but the maximum number varies. For example, on a C16 breaker at 230V, you can connect up to 6 NDR-75 units, or 5 NDR-120, etc.

What is the maximum operating temperature for the 509091?

The maximum ambient temperature is 45°C for NDR-75-12 models and 50°C for other NDR-75/120/240/480 models.

Does the 509091 require a protective earth connection?

Yes, the FG (ground) terminal must be connected to protective earth (PE) for safety.

What safety precautions should I follow when installing the 509091?

Disconnect all power before installation. Do not open the case. Avoid touching the unit during operation or shortly after shutdown. Keep openings free of foreign objects and liquids.

What type of environment is suitable for the 509091?

It is rated for Pollution Degree 2 environments (dry, well-ventilated areas like control cabinets). Do not install in high moisture or near water.

How do I check if the DIN rail locking is secure?

After mounting, shake the unit slightly to confirm it is locked. The unit should be firmly attached to the TS35 rail.

USER MANUAL 509091 Intellinet

NDR is a DIN rail power supply series with an economical price and slim design. Like other Mean Well's DIN series, they can be mounted on a TS35 Standard DIN rail.

- Installation

(1) Always allow good ventilation clearances, 5mm left and right, 40mm above and 20mm below, around the unit in use to prevent it from overheating. Also a 10-15 cm clearance must be kept when the adjacent device is a heat source.

(2) The appropriate mounting orientation for the unit is vertical, the input terminals at the bottom and output on the top. Mounting orientations other than that, such as upside down, horizontal, or table-top mounting, is not allowed.

Pure electrical circuit lines without any symbols

(3) Use copper wire only, and recommended wires are shown as below.

AWG		18	16	14
Rated Current of Equipment (Amp)	7A	10A	15A	20A
Cross-section of Lead( mm^2 )	0.8	1.3	2.1	3.3
Note: Current each wire carries should be de-rated to 80% of the current suggested above when using 5 or more wires connected to the unit.

12

Make sure that all strands of each stranded wire enter the terminal connection and the screw terminals are securely fixed to prevent poor contact. If the power supply possesses multi-output terminals, please make sure each contact is connected to wires to prevent too much current stress on a single contact.

(4) Use wires that can withstand temperatures of at least 80^ C, such as UL1007.
(5) Recommended wire strapping length is 5mm (0.197").
(6) Recommended screwdriver is 3mm, slotted type.

Installation Manual

(7) The recommended torque setting for terminals is shown as below.

Model	I/P
NDR-75 6.9 kgf-cm (6 Lb-in) 6.9 kgf-cm (6 Lb-in)
NDR-120 7.5 kgf-cm (6.5 Lb-in) 7.5 kgf-cm (6.5 Lb-in)
NDR-240 7.5 kgf-cm (6.5 Lb-in) 7.5 kgf-cm (6.5 Lb-in)
NDR-480 10.35 kgf-cm (9 Lb-in) 10.35 kgf-cm (9 Lb-in)

O/P

(8) Suggested fuse and maximum number of the PSUs that can be connected to a circuit breaker at 230V are shown as below.

Model	Fuse	Circuit breaker
		C16	D16
NDR-75	T3.15A/L250V	6	13
NDR-120	T4A/L250V	5	10
NDR-240	T5A/L250V	4	10
NDR-480	T8A/L250V	3	5

(9) Mounting Instruction :

Mount as shown in figure only, with input terminals down, or else sufficient cooling will not be possible.

Admissible DIN rail : TS35/7.5 or TS35/15

For rail fastening :

(a) Tilt the unit slightly rearwards.
(b) Fit the unit over top hat rail.
(c) Slide it downward until it hits the stop.
(d) Press against the bottom for locking.
(e) Shake the unit slightly to check the locking action.

(10) For other information about the products, please refer to www.meanwell.com for details.

● Warning / Caution !!

(1) Risk of electrical shock and energy hazard. All failure should be examined by a qualified technician. Please do not remove the case of the power supply by yourself!
(2) Risk of electric arcs and electric shock (danger to life). Connecting both the primary and the secondary sides together is not allowed.
(3) Risk of burn hazard. Do not touch the unit in operation and shortly after disconnection!
(4) Risk of fire and short circuit. The openings should be protected from foreign objects or dripping liquids.
(5) Only install the unit in a pollution degree 2 environment (Note.1).
(6) Please do not install the unit in places with high moisture or near the water.

Installation Manual

(7) The maximum operating temperature is 45^ C for NDR/EDR-75-12; 50^ C for NDR/EDR-75-24/48, NDR/EDR-120-12/24/48, NDR-240-24/48, NDR-480-24/48, please do not install the unit in places with high ambient temperature or near fire source.
(8) The FG (⊥) must be connected to PE (Protective Earth).
(9) Output current and output wattage must not exceed the rated value on its specification.
(10) Disconnect system from supply voltage: Before commencing any installation, maintenance or modification work: Disconnect your system from supply voltage. Make sure that inadvertent connection in circuit will be impossible!

Note.1: Pollution Degree 2 applies where there is only non-conductive pollution that might temporarily become conductive due to occasional condensation. Generally refer to dry, well-ventilated locations, such as control cabinets.

Manufacturer :

MEAN WELL ENTERPRISES Co., LTD.

No.28, Wuquan 3rd Rd., Wugu Dist.,

New Taipei City 24891, Taiwan

Tel: [phone]

Web: www.meanwell.com

Branch Office :

China

MEAN WELL (GUANGZHOU)

ENTERPRISES Co., LTD.

2F, A Building, Yuean Industry Park,

Huangcun, Dongpu Yown, Tianhe

District, Gungzhou, China

Post Code:510660

Tel: [phone]

Web: www.meanwell.com.cn

U.S.A.

MEAN WELL USA, INC.

44030 Fremont Blvd., Fremont,

CA 94538, U.S.A.

Tel: [phone]

Web: www.meanwellusa.com

Europe

MEAN WELL EUROPE B.V.

Langs de Werf 8, 1185XT

Amstelveen, The Netherlands

Tel: [phone]

Web: www.meanwell.eu