Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
Pactrol Relay MA 803 - Burner Controls
PactrolBurner Controls

Pactrol Relay MA 803

The Pactrol Relay MA 803 is a burner control unit designed for industrial combustion applications up to 40 kg/h maximum burner flow rate. Operating on 24 V control circuit at 50 Hz, the unit supports both…

SKU 3G-CBM-05935

Brand
Pactrol
Item
Relay MA 803
Category
Burner Controls
UNSPSC
40101833 — Boiler or heater igniter
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Pactrol
Model
803
frequency
50 Hz
motor power monophase
0.25 kW
motor power triphasé
0.78 kW
control circuit voltage
24 V
maximum burner flow rate
40 kg/h
supply voltage monophase
220 V
supply voltage triphasé
380 V
control circuit frequency
50 Hz
minimum cell illumination
30 lux
ignition transformer power
400 VA
maximum ambient temperature
40 °C
normal operation consumption
11 VA
security delay burner flow 30kgh
10 sec
security delay burner flow 40kgh
20 sec

Technical Documents

(1)
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

Pactrol Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Pactrol Relay MA 803 is a burner control unit designed for industrial combustion applications up to 40 kg/h maximum burner flow rate. Operating on 24 V control circuit at 50 Hz, the unit supports both single-phase (220 V, 0.25 kW motor) and three-phase (380 V, 0.78 kW motor) supply configurations, with an ignition transformer rated 400 VA. Security delay timing is 10 seconds at 30 kg/h flow and 20 seconds at 40 kg/h flow, with minimum cell illumination set at 30 lux and maximum ambient temperature rating of 40 °C. 3G Electric supplies this control relay for Southeast Asia distribution with full DDP handling.

Frequently Asked Questions

What is the Pactrol Relay MA 803 used for?

The Pactrol Relay MA 803 is a burner control unit for industrial combustion systems. It manages ignition, flame monitoring, and safety sequencing for burners with a maximum flow rate of 40 kg/h. Typical applications include boilers, furnaces, and process heaters in commercial and industrial settings.

What are the specifications of the Pactrol Relay MA 803?

The Pactrol Relay MA 803 operates on a 24 V control circuit at 50 Hz. It supports single-phase supply at 220 V with a 0.25 kW motor or three-phase at 380 V with a 0.78 kW motor. The ignition transformer is rated 400 VA. Security delay is 10 seconds at 30 kg/h flow and 20 seconds at 40 kg/h flow. Maximum ambient temperature is 40 °C.

Where to buy the Pactrol Relay MA 803 in Singapore?

3G Electric supplies the Pactrol Relay MA 803 to customers in Singapore. We handle sourcing, logistics, customs clearance, and delivery to your facility. Contact our team for pricing and lead time on this burner control relay.

How to install the Pactrol Relay MA 803?

Installation of the Pactrol Relay MA 803 must follow the manufacturer's wiring diagram. Connect the control circuit to 24 V, 50 Hz supply. For single-phase, wire the motor to 220 V; for three-phase, use 380 V without neutral. Ensure the flame sensor receives minimum 30 lux illumination. Always disconnect power before servicing.

Used in

Common applications for Pactrol
Industrial boiler systems — Pactrol Relay MA 41 for burners up to 350 kW with dual solenoid control
Commercial heating plants — Pactrol Relay MA 55 for oil burner safety and lockout protection
Process heating equipment — Pactrol Relay MA 52 for fuel flows under 30 kg/h with motor and alarm outputs
Large-scale combustion units — Pactrol Relay MA 610 for three-phase operation at 380V with flame cell monitoring
Small burner installations — Pactrol Relay MA 26 for compact single-phase control at 220V
Multi-stage burner systems — Pactrol Relay MA 45 for sequencing with prepurge and post-ignition
Not sure this is the right part? Photo-identify it

Pactrol Products

3G Electric supplies Pactrol burner controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Gas Trains & Valves Ignition Transformers Burner Controls Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Relay MA 310
Pactrol
Relay MA 310
Relay MA 810
Pactrol
Relay MA 810
Relay MA 43
Pactrol
Relay MA 43
Relay MA 23
Pactrol
Relay MA 23

More from Pactrol

View all Pactrol parts
Relay MA 55
Pactrol
Relay MA 55
Relay MA 26
Pactrol
Relay MA 26
Relay MA 41
Pactrol
Relay MA 41
Relay MA 28
Pactrol
Relay MA 28
Relay MA 29
Pactrol
Relay MA 29
Relay MA 52
Pactrol
Relay MA 52
Relay MA 610
Pactrol
Relay MA 610
Relay MA 72
Pactrol
Relay MA 72

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first